20521384

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{5333}}^1$

素因数の和:5389

約数の個数: 32

約数和(自身を含む): 42565320

約数和(自身を除く): 22043936

約数列:

[1, 2, 4, 8, 13, 26, 37, 52, 74, 104, 148, 296, 481, 962, 1924, 3848, 5333, 10666, 21332, 42664, 69329, 138658, 197321, 277316, 394642, 554632, 789284, 1578568, 2565173, 5130346, 10260692, 20521384]

約数ペア:

[(1, 20521384), (2, 10260692), (4, 5130346), (8, 2565173), (13, 1578568), (26, 789284), (37, 554632), (52, 394642), (74, 277316), (104, 197321), (148, 138658), (296, 69329), (481, 42664), (962, 21332), (1924, 10666), (3848, 5333)]