19969900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^2\times {\mathrm{691}}^1$

素因数の和:739

約数の個数: 54

約数和(自身を含む): 46100348

約数和(自身を除く): 26130448

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 289, 340, 425, 578, 691, 850, 1156, 1382, 1445, 1700, 2764, 2890, 3455, 5780, 6910, 7225, 11747, 13820, 14450, 17275, 23494, 28900, 34550, 46988, 58735, 69100, 117470, 199699, 234940, 293675, 399398, 587350, 798796, 998495, 1174700, 1996990, 3993980, 4992475, 9984950, 19969900]

約数ペア:

[(1, 19969900), (2, 9984950), (4, 4992475), (5, 3993980), (10, 1996990), (17, 1174700), (20, 998495), (25, 798796), (34, 587350), (50, 399398), (68, 293675), (85, 234940), (100, 199699), (170, 117470), (289, 69100), (340, 58735), (425, 46988), (578, 34550), (691, 28900), (850, 23494), (1156, 17275), (1382, 14450), (1445, 13820), (1700, 11747), (2764, 7225), (2890, 6910), (3455, 5780)]