8821820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1033}}^1$

素因数の和:1110

約数の個数: 48

約数和(自身を含む): 21540288

約数和(自身を除く): 12718468

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1033, 1220, 1708, 2066, 2135, 4132, 4270, 5165, 7231, 8540, 10330, 14462, 20660, 28924, 36155, 63013, 72310, 126026, 144620, 252052, 315065, 441091, 630130, 882182, 1260260, 1764364, 2205455, 4410910, 8821820]

約数ペア:

[(1, 8821820), (2, 4410910), (4, 2205455), (5, 1764364), (7, 1260260), (10, 882182), (14, 630130), (20, 441091), (28, 315065), (35, 252052), (61, 144620), (70, 126026), (122, 72310), (140, 63013), (244, 36155), (305, 28924), (427, 20660), (610, 14462), (854, 10330), (1033, 8540), (1220, 7231), (1708, 5165), (2066, 4270), (2135, 4132)]