21095810

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4003}}^1$

素因数の和:4058

約数の個数: 32

約数和(自身を含む): 41513472

約数和(自身を除く): 20417662

約数列:

[1, 2, 5, 10, 17, 31, 34, 62, 85, 155, 170, 310, 527, 1054, 2635, 4003, 5270, 8006, 20015, 40030, 68051, 124093, 136102, 248186, 340255, 620465, 680510, 1240930, 2109581, 4219162, 10547905, 21095810]

約数ペア:

[(1, 21095810), (2, 10547905), (5, 4219162), (10, 2109581), (17, 1240930), (31, 680510), (34, 620465), (62, 340255), (85, 248186), (155, 136102), (170, 124093), (310, 68051), (527, 40030), (1054, 20015), (2635, 8006), (4003, 5270)]