1561668400

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{125941}}^1$

素因数の和:125990

約数の個数: 60

約数和(自身を含む): 3872968384

約数和(自身を除く): 2311299984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1550, 2480, 3100, 6200, 12400, 125941, 251882, 503764, 629705, 1007528, 1259410, 2015056, 2518820, 3148525, 3904171, 5037640, 6297050, 7808342, 10075280, 12594100, 15616684, 19520855, 25188200, 31233368, 39041710, 50376400, 62466736, 78083420, 97604275, 156166840, 195208550, 312333680, 390417100, 780834200, 1561668400]

約数ペア:

[(1, 1561668400), (2, 780834200), (4, 390417100), (5, 312333680), (8, 195208550), (10, 156166840), (16, 97604275), (20, 78083420), (25, 62466736), (31, 50376400), (40, 39041710), (50, 31233368), (62, 25188200), (80, 19520855), (100, 15616684), (124, 12594100), (155, 10075280), (200, 7808342), (248, 6297050), (310, 5037640), (400, 3904171), (496, 3148525), (620, 2518820), (775, 2015056), (1240, 1259410), (1550, 1007528), (2480, 629705), (3100, 503764), (6200, 251882), (12400, 125941)]