20171227820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{739957}}^1$

素因数の和:740042

約数の個数: 48

約数和(自身を含む): 44752659840

約数和(自身を除く): 24581432020

約数列:

[1, 2, 4, 5, 10, 20, 29, 47, 58, 94, 116, 145, 188, 235, 290, 470, 580, 940, 1363, 2726, 5452, 6815, 13630, 27260, 739957, 1479914, 2959828, 3699785, 7399570, 14799140, 21458753, 34777979, 42917506, 69555958, 85835012, 107293765, 139111916, 173889895, 214587530, 347779790, 429175060, 695559580, 1008561391, 2017122782, 4034245564, 5042806955, 10085613910, 20171227820]

約数ペア:

[(1, 20171227820), (2, 10085613910), (4, 5042806955), (5, 4034245564), (10, 2017122782), (20, 1008561391), (29, 695559580), (47, 429175060), (58, 347779790), (94, 214587530), (116, 173889895), (145, 139111916), (188, 107293765), (235, 85835012), (290, 69555958), (470, 42917506), (580, 34777979), (940, 21458753), (1363, 14799140), (2726, 7399570), (5452, 3699785), (6815, 2959828), (13630, 1479914), (27260, 739957)]