20393580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{449}}^1\times {\mathrm{757}}^1$

素因数の和:1218

約数の個数: 48

約数和(自身を含む): 57304800

約数和(自身を除く): 36911220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 449, 757, 898, 1347, 1514, 1796, 2245, 2271, 2694, 3028, 3785, 4490, 4542, 5388, 6735, 7570, 8980, 9084, 11355, 13470, 15140, 22710, 26940, 45420, 339893, 679786, 1019679, 1359572, 1699465, 2039358, 3398930, 4078716, 5098395, 6797860, 10196790, 20393580]

約数ペア:

[(1, 20393580), (2, 10196790), (3, 6797860), (4, 5098395), (5, 4078716), (6, 3398930), (10, 2039358), (12, 1699465), (15, 1359572), (20, 1019679), (30, 679786), (60, 339893), (449, 45420), (757, 26940), (898, 22710), (1347, 15140), (1514, 13470), (1796, 11355), (2245, 9084), (2271, 8980), (2694, 7570), (3028, 6735), (3785, 5388), (4490, 4542)]