64505080

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:376

約数の個数: 64

約数和(自身を含む): 149040000

約数和(自身を除く): 84534920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 137, 149, 158, 274, 298, 316, 395, 548, 596, 632, 685, 745, 790, 1096, 1192, 1370, 1490, 1580, 2740, 2980, 3160, 5480, 5960, 10823, 11771, 20413, 21646, 23542, 40826, 43292, 47084, 54115, 58855, 81652, 86584, 94168, 102065, 108230, 117710, 163304, 204130, 216460, 235420, 408260, 432920, 470840, 816520, 1612627, 3225254, 6450508, 8063135, 12901016, 16126270, 32252540, 64505080]

約数ペア:

[(1, 64505080), (2, 32252540), (4, 16126270), (5, 12901016), (8, 8063135), (10, 6450508), (20, 3225254), (40, 1612627), (79, 816520), (137, 470840), (149, 432920), (158, 408260), (274, 235420), (298, 216460), (316, 204130), (395, 163304), (548, 117710), (596, 108230), (632, 102065), (685, 94168), (745, 86584), (790, 81652), (1096, 58855), (1192, 54115), (1370, 47084), (1490, 43292), (1580, 40826), (2740, 23542), (2980, 21646), (3160, 20413), (5480, 11771), (5960, 10823)]