12744440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{409}}^1$

素因数の和:480

約数の個数: 64

約数和(自身を含む): 30996000

約数和(自身を除く): 18251560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 409, 410, 760, 779, 818, 820, 1558, 1636, 1640, 2045, 3116, 3272, 3895, 4090, 6232, 7771, 7790, 8180, 15542, 15580, 16360, 16769, 31084, 31160, 33538, 38855, 62168, 67076, 77710, 83845, 134152, 155420, 167690, 310840, 318611, 335380, 637222, 670760, 1274444, 1593055, 2548888, 3186110, 6372220, 12744440]

約数ペア:

[(1, 12744440), (2, 6372220), (4, 3186110), (5, 2548888), (8, 1593055), (10, 1274444), (19, 670760), (20, 637222), (38, 335380), (40, 318611), (41, 310840), (76, 167690), (82, 155420), (95, 134152), (152, 83845), (164, 77710), (190, 67076), (205, 62168), (328, 38855), (380, 33538), (409, 31160), (410, 31084), (760, 16769), (779, 16360), (818, 15580), (820, 15542), (1558, 8180), (1636, 7790), (1640, 7771), (2045, 6232), (3116, 4090), (3272, 3895)]