21286920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{3347}}^1$

素因数の和:3414

約数の個数: 64

約数和(自身を含む): 65085120

約数和(自身を除く): 43798200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 53, 60, 106, 120, 159, 212, 265, 318, 424, 530, 636, 795, 1060, 1272, 1590, 2120, 3180, 3347, 6360, 6694, 10041, 13388, 16735, 20082, 26776, 33470, 40164, 50205, 66940, 80328, 100410, 133880, 177391, 200820, 354782, 401640, 532173, 709564, 886955, 1064346, 1419128, 1773910, 2128692, 2660865, 3547820, 4257384, 5321730, 7095640, 10643460, 21286920]

約数ペア:

[(1, 21286920), (2, 10643460), (3, 7095640), (4, 5321730), (5, 4257384), (6, 3547820), (8, 2660865), (10, 2128692), (12, 1773910), (15, 1419128), (20, 1064346), (24, 886955), (30, 709564), (40, 532173), (53, 401640), (60, 354782), (106, 200820), (120, 177391), (159, 133880), (212, 100410), (265, 80328), (318, 66940), (424, 50205), (530, 40164), (636, 33470), (795, 26776), (1060, 20082), (1272, 16735), (1590, 13388), (2120, 10041), (3180, 6694), (3347, 6360)]