128439712

素因数分解:

$2^5\times {\mathrm{251}}^1\times {\mathrm{15991}}^1$

素因数の和:16252

約数の個数: 24

約数和(自身を含む): 253888992

約数和(自身を除く): 125449280

約数列:

[1, 2, 4, 8, 16, 32, 251, 502, 1004, 2008, 4016, 8032, 15991, 31982, 63964, 127928, 255856, 511712, 4013741, 8027482, 16054964, 32109928, 64219856, 128439712]

約数ペア:

[(1, 128439712), (2, 64219856), (4, 32109928), (8, 16054964), (16, 8027482), (32, 4013741), (251, 511712), (502, 255856), (1004, 127928), (2008, 63964), (4016, 31982), (8032, 15991)]