18339560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{409}}^1$

素因数の和:498

約数の個数: 64

約数和(自身を含む): 44280000

約数和(自身を除く): 25940440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 59, 76, 95, 118, 152, 190, 236, 295, 380, 409, 472, 590, 760, 818, 1121, 1180, 1636, 2045, 2242, 2360, 3272, 4090, 4484, 5605, 7771, 8180, 8968, 11210, 15542, 16360, 22420, 24131, 31084, 38855, 44840, 48262, 62168, 77710, 96524, 120655, 155420, 193048, 241310, 310840, 458489, 482620, 916978, 965240, 1833956, 2292445, 3667912, 4584890, 9169780, 18339560]

約数ペア:

[(1, 18339560), (2, 9169780), (4, 4584890), (5, 3667912), (8, 2292445), (10, 1833956), (19, 965240), (20, 916978), (38, 482620), (40, 458489), (59, 310840), (76, 241310), (95, 193048), (118, 155420), (152, 120655), (190, 96524), (236, 77710), (295, 62168), (380, 48262), (409, 44840), (472, 38855), (590, 31084), (760, 24131), (818, 22420), (1121, 16360), (1180, 15542), (1636, 11210), (2045, 8968), (2242, 8180), (2360, 7771), (3272, 5605), (4090, 4484)]