64749980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1\times {\mathrm{383}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 139345920

約数和(自身を除く): 74595940

約数列:

[1, 2, 4, 5, 10, 20, 79, 107, 158, 214, 316, 383, 395, 428, 535, 766, 790, 1070, 1532, 1580, 1915, 2140, 3830, 7660, 8453, 16906, 30257, 33812, 40981, 42265, 60514, 81962, 84530, 121028, 151285, 163924, 169060, 204905, 302570, 409810, 605140, 819620, 3237499, 6474998, 12949996, 16187495, 32374990, 64749980]

約数ペア:

[(1, 64749980), (2, 32374990), (4, 16187495), (5, 12949996), (10, 6474998), (20, 3237499), (79, 819620), (107, 605140), (158, 409810), (214, 302570), (316, 204905), (383, 169060), (395, 163924), (428, 151285), (535, 121028), (766, 84530), (790, 81962), (1070, 60514), (1532, 42265), (1580, 40981), (1915, 33812), (2140, 30257), (3830, 16906), (7660, 8453)]