19743560

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:270

約数の個数: 64

約数和(自身を含む): 46267200

約数和(自身を除く): 26523640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 67, 106, 134, 139, 212, 265, 268, 278, 335, 424, 530, 536, 556, 670, 695, 1060, 1112, 1340, 1390, 2120, 2680, 2780, 3551, 5560, 7102, 7367, 9313, 14204, 14734, 17755, 18626, 28408, 29468, 35510, 36835, 37252, 46565, 58936, 71020, 73670, 74504, 93130, 142040, 147340, 186260, 294680, 372520, 493589, 987178, 1974356, 2467945, 3948712, 4935890, 9871780, 19743560]

約数ペア:

[(1, 19743560), (2, 9871780), (4, 4935890), (5, 3948712), (8, 2467945), (10, 1974356), (20, 987178), (40, 493589), (53, 372520), (67, 294680), (106, 186260), (134, 147340), (139, 142040), (212, 93130), (265, 74504), (268, 73670), (278, 71020), (335, 58936), (424, 46565), (530, 37252), (536, 36835), (556, 35510), (670, 29468), (695, 28408), (1060, 18626), (1112, 17755), (1340, 14734), (1390, 14204), (2120, 9313), (2680, 7367), (2780, 7102), (3551, 5560)]