19811766

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 46061568

約数和(自身を除く): 26249802

約数列:

[1, 2, 3, 6, 13, 17, 26, 34, 39, 51, 67, 78, 102, 134, 201, 221, 223, 402, 442, 446, 663, 669, 871, 1139, 1326, 1338, 1742, 2278, 2613, 2899, 3417, 3791, 5226, 5798, 6834, 7582, 8697, 11373, 14807, 14941, 17394, 22746, 29614, 29882, 44421, 44823, 49283, 88842, 89646, 98566, 147849, 194233, 253997, 295698, 388466, 507994, 582699, 761991, 1165398, 1523982, 3301961, 6603922, 9905883, 19811766]

約数ペア:

[(1, 19811766), (2, 9905883), (3, 6603922), (6, 3301961), (13, 1523982), (17, 1165398), (26, 761991), (34, 582699), (39, 507994), (51, 388466), (67, 295698), (78, 253997), (102, 194233), (134, 147849), (201, 98566), (221, 89646), (223, 88842), (402, 49283), (442, 44823), (446, 44421), (663, 29882), (669, 29614), (871, 22746), (1139, 17394), (1326, 14941), (1338, 14807), (1742, 11373), (2278, 8697), (2613, 7582), (2899, 6834), (3417, 5798), (3791, 5226)]