20702580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{887}}^1$

素因数の和:1288

約数の個数: 48

約数和(自身を含む): 58181760

約数和(自身を除く): 37479180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 389, 778, 887, 1167, 1556, 1774, 1945, 2334, 2661, 3548, 3890, 4435, 4668, 5322, 5835, 7780, 8870, 10644, 11670, 13305, 17740, 23340, 26610, 53220, 345043, 690086, 1035129, 1380172, 1725215, 2070258, 3450430, 4140516, 5175645, 6900860, 10351290, 20702580]

約数ペア:

[(1, 20702580), (2, 10351290), (3, 6900860), (4, 5175645), (5, 4140516), (6, 3450430), (10, 2070258), (12, 1725215), (15, 1380172), (20, 1035129), (30, 690086), (60, 345043), (389, 53220), (778, 26610), (887, 23340), (1167, 17740), (1556, 13305), (1774, 11670), (1945, 10644), (2334, 8870), (2661, 7780), (3548, 5835), (3890, 5322), (4435, 4668)]