25081720

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{11831}}^1$

素因数の和:11895

約数の個数: 32

約数和(自身を含む): 57503520

約数和(自身を除く): 32421800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 11831, 23662, 47324, 59155, 94648, 118310, 236620, 473240, 627043, 1254086, 2508172, 3135215, 5016344, 6270430, 12540860, 25081720]

約数ペア:

[(1, 25081720), (2, 12540860), (4, 6270430), (5, 5016344), (8, 3135215), (10, 2508172), (20, 1254086), (40, 627043), (53, 473240), (106, 236620), (212, 118310), (265, 94648), (424, 59155), (530, 47324), (1060, 23662), (2120, 11831)]