21212750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:198

約数の個数: 64

約数和(自身を含む): 43872192

約数和(自身を除く): 22659442

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 61, 65, 107, 122, 125, 130, 214, 250, 305, 325, 535, 610, 650, 793, 1070, 1391, 1525, 1586, 1625, 2675, 2782, 3050, 3250, 3965, 5350, 6527, 6955, 7625, 7930, 13054, 13375, 13910, 15250, 19825, 26750, 32635, 34775, 39650, 65270, 69550, 84851, 99125, 163175, 169702, 173875, 198250, 326350, 347750, 424255, 815875, 848510, 1631750, 2121275, 4242550, 10606375, 21212750]

約数ペア:

[(1, 21212750), (2, 10606375), (5, 4242550), (10, 2121275), (13, 1631750), (25, 848510), (26, 815875), (50, 424255), (61, 347750), (65, 326350), (107, 198250), (122, 173875), (125, 169702), (130, 163175), (214, 99125), (250, 84851), (305, 69550), (325, 65270), (535, 39650), (610, 34775), (650, 32635), (793, 26750), (1070, 19825), (1391, 15250), (1525, 13910), (1586, 13375), (1625, 13054), (2675, 7930), (2782, 7625), (3050, 6955), (3250, 6527), (3965, 5350)]