17721220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{739}}^1$

素因数の和:868

約数の個数: 48

約数和(自身を含む): 41025600

約数和(自身を除く): 23304380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 739, 1090, 1199, 1478, 2180, 2398, 2956, 3695, 4796, 5995, 7390, 8129, 11990, 14780, 16258, 23980, 32516, 40645, 80551, 81290, 161102, 162580, 322204, 402755, 805510, 886061, 1611020, 1772122, 3544244, 4430305, 8860610, 17721220]

約数ペア:

[(1, 17721220), (2, 8860610), (4, 4430305), (5, 3544244), (10, 1772122), (11, 1611020), (20, 886061), (22, 805510), (44, 402755), (55, 322204), (109, 162580), (110, 161102), (218, 81290), (220, 80551), (436, 40645), (545, 32516), (739, 23980), (1090, 16258), (1199, 14780), (1478, 11990), (2180, 8129), (2398, 7390), (2956, 5995), (3695, 4796)]