21148740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{293}}^1\times {\mathrm{401}}^1$

素因数の和:709

約数の個数: 72

約数和(自身を含む): 64530648

約数和(自身を除く): 43381908

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 293, 401, 586, 802, 879, 1172, 1203, 1465, 1604, 1758, 2005, 2406, 2637, 2930, 3516, 3609, 4010, 4395, 4812, 5274, 5860, 6015, 7218, 8020, 8790, 10548, 12030, 13185, 14436, 17580, 18045, 24060, 26370, 36090, 52740, 72180, 117493, 234986, 352479, 469972, 587465, 704958, 1057437, 1174930, 1409916, 1762395, 2114874, 2349860, 3524790, 4229748, 5287185, 7049580, 10574370, 21148740]

約数ペア:

[(1, 21148740), (2, 10574370), (3, 7049580), (4, 5287185), (5, 4229748), (6, 3524790), (9, 2349860), (10, 2114874), (12, 1762395), (15, 1409916), (18, 1174930), (20, 1057437), (30, 704958), (36, 587465), (45, 469972), (60, 352479), (90, 234986), (180, 117493), (293, 72180), (401, 52740), (586, 36090), (802, 26370), (879, 24060), (1172, 18045), (1203, 17580), (1465, 14436), (1604, 13185), (1758, 12030), (2005, 10548), (2406, 8790), (2637, 8020), (2930, 7218), (3516, 6015), (3609, 5860), (4010, 5274), (4395, 4812)]