18521820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2393}}^1$

素因数の和:2451

約数の個数: 72

約数和(自身を含む): 57513456

約数和(自身を除く): 38991636

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2393, 2580, 3870, 4786, 7179, 7740, 9572, 11965, 14358, 21537, 23930, 28716, 35895, 43074, 47860, 71790, 86148, 102899, 107685, 143580, 205798, 215370, 308697, 411596, 430740, 514495, 617394, 926091, 1028990, 1234788, 1543485, 1852182, 2057980, 3086970, 3704364, 4630455, 6173940, 9260910, 18521820]

約数ペア:

[(1, 18521820), (2, 9260910), (3, 6173940), (4, 4630455), (5, 3704364), (6, 3086970), (9, 2057980), (10, 1852182), (12, 1543485), (15, 1234788), (18, 1028990), (20, 926091), (30, 617394), (36, 514495), (43, 430740), (45, 411596), (60, 308697), (86, 215370), (90, 205798), (129, 143580), (172, 107685), (180, 102899), (215, 86148), (258, 71790), (387, 47860), (430, 43074), (516, 35895), (645, 28716), (774, 23930), (860, 21537), (1290, 14358), (1548, 11965), (1935, 9572), (2393, 7740), (2580, 7179), (3870, 4786)]