128697740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{827}}^1$

素因数の和:1118

約数の個数: 48

約数和(自身を含む): 280433664

約数和(自身を除く): 151735924

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 251, 310, 502, 620, 827, 1004, 1255, 1654, 2510, 3308, 4135, 5020, 7781, 8270, 15562, 16540, 25637, 31124, 38905, 51274, 77810, 102548, 128185, 155620, 207577, 256370, 415154, 512740, 830308, 1037885, 2075770, 4151540, 6434887, 12869774, 25739548, 32174435, 64348870, 128697740]

約数ペア:

[(1, 128697740), (2, 64348870), (4, 32174435), (5, 25739548), (10, 12869774), (20, 6434887), (31, 4151540), (62, 2075770), (124, 1037885), (155, 830308), (251, 512740), (310, 415154), (502, 256370), (620, 207577), (827, 155620), (1004, 128185), (1255, 102548), (1654, 77810), (2510, 51274), (3308, 38905), (4135, 31124), (5020, 25637), (7781, 16540), (8270, 15562)]