20657104

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5227}}^1$

素因数の和:5267

約数の個数: 40

約数和(自身を含む): 45379040

約数和(自身を除く): 24721936

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 5227, 10454, 20908, 41816, 67951, 83632, 99313, 135902, 198626, 271804, 397252, 543608, 794504, 1087216, 1291069, 1589008, 2582138, 5164276, 10328552, 20657104]

約数ペア:

[(1, 20657104), (2, 10328552), (4, 5164276), (8, 2582138), (13, 1589008), (16, 1291069), (19, 1087216), (26, 794504), (38, 543608), (52, 397252), (76, 271804), (104, 198626), (152, 135902), (208, 99313), (247, 83632), (304, 67951), (494, 41816), (988, 20908), (1976, 10454), (3952, 5227)]