21869190

素因数分解:

$2^1\times 3^4\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1$

素因数の和:81

約数の個数: 240

約数和(自身を含む): 74487600

約数和(自身を除く): 52618410

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 27, 29, 30, 35, 38, 42, 45, 49, 54, 57, 58, 63, 70, 81, 87, 90, 95, 98, 105, 114, 126, 133, 135, 145, 147, 162, 171, 174, 189, 190, 203, 210, 245, 261, 266, 270, 285, 290, 294, 315, 342, 378, 399, 405, 406, 435, 441, 490, 513, 522, 551, 567, 570, 609, 630, 665, 735, 783, 798, 810, 855, 870, 882, 931, 945, 1015, 1026, 1102, 1134, 1197, 1218, 1305, 1323, 1330, 1421, 1470, 1539, 1566, 1653, 1710, 1827, 1862, 1890, 1995, 2030, 2205, 2349, 2394, 2565, 2610, 2646, 2755, 2793, 2835, 2842, 3045, 3078, 3306, 3591, 3654, 3857, 3915, 3969, 3990, 4263, 4410, 4655, 4698, 4959, 5130, 5481, 5510, 5586, 5670, 5985, 6090, 6615, 7105, 7182, 7695, 7714, 7830, 7938, 8265, 8379, 8526, 9135, 9310, 9918, 10773, 10962, 11571, 11745, 11970, 12789, 13230, 13965, 14210, 14877, 15390, 16443, 16530, 16758, 17955, 18270, 19285, 19845, 21315, 21546, 23142, 23490, 24795, 25137, 25578, 26999, 27405, 27930, 29754, 32886, 34713, 35910, 38367, 38570, 39690, 41895, 42630, 44631, 49590, 50274, 53865, 53998, 54810, 57855, 63945, 69426, 74385, 75411, 76734, 80997, 82215, 83790, 89262, 104139, 107730, 115101, 115710, 125685, 127890, 134995, 148770, 150822, 161994, 164430, 173565, 191835, 208278, 223155, 230202, 242991, 251370, 269990, 312417, 347130, 377055, 383670, 404985, 446310, 485982, 520695, 575505, 624834, 728973, 754110, 809970, 1041390, 1151010, 1214955, 1457946, 1562085, 2186919, 2429910, 3124170, 3644865, 4373838, 7289730, 10934595, 21869190]

約数ペア:

[(1, 21869190), (2, 10934595), (3, 7289730), (5, 4373838), (6, 3644865), (7, 3124170), (9, 2429910), (10, 2186919), (14, 1562085), (15, 1457946), (18, 1214955), (19, 1151010), (21, 1041390), (27, 809970), (29, 754110), (30, 728973), (35, 624834), (38, 575505), (42, 520695), (45, 485982), (49, 446310), (54, 404985), (57, 383670), (58, 377055), (63, 347130), (70, 312417), (81, 269990), (87, 251370), (90, 242991), (95, 230202), (98, 223155), (105, 208278), (114, 191835), (126, 173565), (133, 164430), (135, 161994), (145, 150822), (147, 148770), (162, 134995), (171, 127890), (174, 125685), (189, 115710), (190, 115101), (203, 107730), (210, 104139), (245, 89262), (261, 83790), (266, 82215), (270, 80997), (285, 76734), (290, 75411), (294, 74385), (315, 69426), (342, 63945), (378, 57855), (399, 54810), (405, 53998), (406, 53865), (435, 50274), (441, 49590), (490, 44631), (513, 42630), (522, 41895), (551, 39690), (567, 38570), (570, 38367), (609, 35910), (630, 34713), (665, 32886), (735, 29754), (783, 27930), (798, 27405), (810, 26999), (855, 25578), (870, 25137), (882, 24795), (931, 23490), (945, 23142), (1015, 21546), (1026, 21315), (1102, 19845), (1134, 19285), (1197, 18270), (1218, 17955), (1305, 16758), (1323, 16530), (1330, 16443), (1421, 15390), (1470, 14877), (1539, 14210), (1566, 13965), (1653, 13230), (1710, 12789), (1827, 11970), (1862, 11745), (1890, 11571), (1995, 10962), (2030, 10773), (2205, 9918), (2349, 9310), (2394, 9135), (2565, 8526), (2610, 8379), (2646, 8265), (2755, 7938), (2793, 7830), (2835, 7714), (2842, 7695), (3045, 7182), (3078, 7105), (3306, 6615), (3591, 6090), (3654, 5985), (3857, 5670), (3915, 5586), (3969, 5510), (3990, 5481), (4263, 5130), (4410, 4959), (4655, 4698)]