19519840

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6421}}^1$

素因数の和:6455

約数の個数: 48

約数和(自身を含む): 48550320

約数和(自身を除く): 29030480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 6421, 12842, 25684, 32105, 51368, 64210, 102736, 121999, 128420, 205472, 243998, 256840, 487996, 513680, 609995, 975992, 1027360, 1219990, 1951984, 2439980, 3903968, 4879960, 9759920, 19519840]

約数ペア:

[(1, 19519840), (2, 9759920), (4, 4879960), (5, 3903968), (8, 2439980), (10, 1951984), (16, 1219990), (19, 1027360), (20, 975992), (32, 609995), (38, 513680), (40, 487996), (76, 256840), (80, 243998), (95, 205472), (152, 128420), (160, 121999), (190, 102736), (304, 64210), (380, 51368), (608, 32105), (760, 25684), (1520, 12842), (3040, 6421)]