20643390

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{757}}^1$

素因数の和:874

約数の個数: 64

約数和(自身を含む): 55667520

約数和(自身を除く): 35024130

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 101, 135, 202, 270, 303, 505, 606, 757, 909, 1010, 1514, 1515, 1818, 2271, 2727, 3030, 3785, 4542, 4545, 5454, 6813, 7570, 9090, 11355, 13626, 13635, 20439, 22710, 27270, 34065, 40878, 68130, 76457, 102195, 152914, 204390, 229371, 382285, 458742, 688113, 764570, 1146855, 1376226, 2064339, 2293710, 3440565, 4128678, 6881130, 10321695, 20643390]

約数ペア:

[(1, 20643390), (2, 10321695), (3, 6881130), (5, 4128678), (6, 3440565), (9, 2293710), (10, 2064339), (15, 1376226), (18, 1146855), (27, 764570), (30, 688113), (45, 458742), (54, 382285), (90, 229371), (101, 204390), (135, 152914), (202, 102195), (270, 76457), (303, 68130), (505, 40878), (606, 34065), (757, 27270), (909, 22710), (1010, 20439), (1514, 13635), (1515, 13626), (1818, 11355), (2271, 9090), (2727, 7570), (3030, 6813), (3785, 5454), (4542, 4545)]