20848980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8081}}^1$

素因数の和:8136

約数の個数: 48

約数和(自身を含む): 59742144

約数和(自身を除く): 38893164

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 8081, 16162, 24243, 32324, 40405, 48486, 80810, 96972, 121215, 161620, 242430, 347483, 484860, 694966, 1042449, 1389932, 1737415, 2084898, 3474830, 4169796, 5212245, 6949660, 10424490, 20848980]

約数ペア:

[(1, 20848980), (2, 10424490), (3, 6949660), (4, 5212245), (5, 4169796), (6, 3474830), (10, 2084898), (12, 1737415), (15, 1389932), (20, 1042449), (30, 694966), (43, 484860), (60, 347483), (86, 242430), (129, 161620), (172, 121215), (215, 96972), (258, 80810), (430, 48486), (516, 40405), (645, 32324), (860, 24243), (1290, 16162), (2580, 8081)]