638560064

素因数分解:

$2^6\times {\mathrm{127}}^1\times {\mathrm{251}}^1\times {\mathrm{313}}^1$

素因数の和:703

約数の個数: 56

約数和(自身を含む): 1286304768

約数和(自身を除く): 647744704

約数列:

[1, 2, 4, 8, 16, 32, 64, 127, 251, 254, 313, 502, 508, 626, 1004, 1016, 1252, 2008, 2032, 2504, 4016, 4064, 5008, 8032, 8128, 10016, 16064, 20032, 31877, 39751, 63754, 78563, 79502, 127508, 157126, 159004, 255016, 314252, 318008, 510032, 628504, 636016, 1020064, 1257008, 1272032, 2040128, 2514016, 2544064, 5028032, 9977501, 19955002, 39910004, 79820008, 159640016, 319280032, 638560064]

約数ペア:

[(1, 638560064), (2, 319280032), (4, 159640016), (8, 79820008), (16, 39910004), (32, 19955002), (64, 9977501), (127, 5028032), (251, 2544064), (254, 2514016), (313, 2040128), (502, 1272032), (508, 1257008), (626, 1020064), (1004, 636016), (1016, 628504), (1252, 510032), (2008, 318008), (2032, 314252), (2504, 255016), (4016, 159004), (4064, 157126), (5008, 127508), (8032, 79502), (8128, 78563), (10016, 63754), (16064, 39751), (20032, 31877)]