19695780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{443}}^1$

素因数の和:490

約数の個数: 144

約数和(自身を含む): 67878720

約数和(自身を除く): 48182940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 30, 36, 38, 39, 45, 52, 57, 60, 65, 76, 78, 90, 95, 114, 117, 130, 156, 171, 180, 190, 195, 228, 234, 247, 260, 285, 342, 380, 390, 443, 468, 494, 570, 585, 684, 741, 780, 855, 886, 988, 1140, 1170, 1235, 1329, 1482, 1710, 1772, 2215, 2223, 2340, 2470, 2658, 2964, 3420, 3705, 3987, 4430, 4446, 4940, 5316, 5759, 6645, 7410, 7974, 8417, 8860, 8892, 11115, 11518, 13290, 14820, 15948, 16834, 17277, 19935, 22230, 23036, 25251, 26580, 28795, 33668, 34554, 39870, 42085, 44460, 50502, 51831, 57590, 69108, 75753, 79740, 84170, 86385, 101004, 103662, 109421, 115180, 126255, 151506, 168340, 172770, 207324, 218842, 252510, 259155, 303012, 328263, 345540, 378765, 437684, 505020, 518310, 547105, 656526, 757530, 984789, 1036620, 1094210, 1313052, 1515060, 1641315, 1969578, 2188420, 3282630, 3939156, 4923945, 6565260, 9847890, 19695780]

約数ペア:

[(1, 19695780), (2, 9847890), (3, 6565260), (4, 4923945), (5, 3939156), (6, 3282630), (9, 2188420), (10, 1969578), (12, 1641315), (13, 1515060), (15, 1313052), (18, 1094210), (19, 1036620), (20, 984789), (26, 757530), (30, 656526), (36, 547105), (38, 518310), (39, 505020), (45, 437684), (52, 378765), (57, 345540), (60, 328263), (65, 303012), (76, 259155), (78, 252510), (90, 218842), (95, 207324), (114, 172770), (117, 168340), (130, 151506), (156, 126255), (171, 115180), (180, 109421), (190, 103662), (195, 101004), (228, 86385), (234, 84170), (247, 79740), (260, 75753), (285, 69108), (342, 57590), (380, 51831), (390, 50502), (443, 44460), (468, 42085), (494, 39870), (570, 34554), (585, 33668), (684, 28795), (741, 26580), (780, 25251), (855, 23036), (886, 22230), (988, 19935), (1140, 17277), (1170, 16834), (1235, 15948), (1329, 14820), (1482, 13290), (1710, 11518), (1772, 11115), (2215, 8892), (2223, 8860), (2340, 8417), (2470, 7974), (2658, 7410), (2964, 6645), (3420, 5759), (3705, 5316), (3987, 4940), (4430, 4446)]