81000990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1$

素因数の和:207

約数の個数: 192

約数和(自身を含む): 259683840

約数和(自身を除く): 178682850

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 30, 35, 38, 42, 45, 57, 63, 67, 70, 90, 95, 101, 105, 114, 126, 133, 134, 171, 190, 201, 202, 210, 266, 285, 303, 315, 335, 342, 399, 402, 469, 505, 570, 603, 606, 630, 665, 670, 707, 798, 855, 909, 938, 1005, 1010, 1197, 1206, 1273, 1330, 1407, 1414, 1515, 1710, 1818, 1919, 1995, 2010, 2121, 2345, 2394, 2546, 2814, 3015, 3030, 3535, 3819, 3838, 3990, 4221, 4242, 4545, 4690, 5757, 5985, 6030, 6363, 6365, 6767, 7035, 7070, 7638, 8442, 8911, 9090, 9595, 10605, 11457, 11514, 11970, 12726, 12730, 13433, 13534, 14070, 17271, 17822, 19095, 19190, 20301, 21105, 21210, 22914, 26733, 26866, 28785, 31815, 33835, 34542, 38190, 40299, 40602, 42210, 44555, 47369, 53466, 57285, 57570, 60903, 63630, 67165, 67670, 80199, 80598, 86355, 89110, 94738, 101505, 114570, 120897, 121806, 128573, 133665, 134330, 142107, 160398, 172710, 201495, 203010, 236845, 241794, 257146, 267330, 284214, 304515, 385719, 400995, 402990, 426321, 473690, 604485, 609030, 642865, 710535, 771438, 801990, 852642, 900011, 1157157, 1208970, 1285730, 1421070, 1800022, 1928595, 2131605, 2314314, 2700033, 3857190, 4263210, 4500055, 5400066, 5785785, 8100099, 9000110, 11571570, 13500165, 16200198, 27000330, 40500495, 81000990]

約数ペア:

[(1, 81000990), (2, 40500495), (3, 27000330), (5, 16200198), (6, 13500165), (7, 11571570), (9, 9000110), (10, 8100099), (14, 5785785), (15, 5400066), (18, 4500055), (19, 4263210), (21, 3857190), (30, 2700033), (35, 2314314), (38, 2131605), (42, 1928595), (45, 1800022), (57, 1421070), (63, 1285730), (67, 1208970), (70, 1157157), (90, 900011), (95, 852642), (101, 801990), (105, 771438), (114, 710535), (126, 642865), (133, 609030), (134, 604485), (171, 473690), (190, 426321), (201, 402990), (202, 400995), (210, 385719), (266, 304515), (285, 284214), (303, 267330), (315, 257146), (335, 241794), (342, 236845), (399, 203010), (402, 201495), (469, 172710), (505, 160398), (570, 142107), (603, 134330), (606, 133665), (630, 128573), (665, 121806), (670, 120897), (707, 114570), (798, 101505), (855, 94738), (909, 89110), (938, 86355), (1005, 80598), (1010, 80199), (1197, 67670), (1206, 67165), (1273, 63630), (1330, 60903), (1407, 57570), (1414, 57285), (1515, 53466), (1710, 47369), (1818, 44555), (1919, 42210), (1995, 40602), (2010, 40299), (2121, 38190), (2345, 34542), (2394, 33835), (2546, 31815), (2814, 28785), (3015, 26866), (3030, 26733), (3535, 22914), (3819, 21210), (3838, 21105), (3990, 20301), (4221, 19190), (4242, 19095), (4545, 17822), (4690, 17271), (5757, 14070), (5985, 13534), (6030, 13433), (6363, 12730), (6365, 12726), (6767, 11970), (7035, 11514), (7070, 11457), (7638, 10605), (8442, 9595), (8911, 9090)]