20891384

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{433}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 40570320

約数和(自身を除く): 19678936

約数列:

[1, 2, 4, 8, 37, 74, 148, 163, 296, 326, 433, 652, 866, 1304, 1732, 3464, 6031, 12062, 16021, 24124, 32042, 48248, 64084, 70579, 128168, 141158, 282316, 564632, 2611423, 5222846, 10445692, 20891384]

約数ペア:

[(1, 20891384), (2, 10445692), (4, 5222846), (8, 2611423), (37, 564632), (74, 282316), (148, 141158), (163, 128168), (296, 70579), (326, 64084), (433, 48248), (652, 32042), (866, 24124), (1304, 16021), (1732, 12062), (3464, 6031)]