21713419

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{383}}^1$

素因数の和:499

約数の個数: 24

約数和(自身を含む): 27578880

約数和(自身を除く): 5865461

約数列:

[1, 7, 13, 49, 89, 91, 383, 623, 637, 1157, 2681, 4361, 4979, 8099, 18767, 34087, 34853, 56693, 238609, 243971, 443131, 1670263, 3101917, 21713419]

約数ペア:

[(1, 21713419), (7, 3101917), (13, 1670263), (49, 443131), (89, 243971), (91, 238609), (383, 56693), (623, 34853), (637, 34087), (1157, 18767), (2681, 8099), (4361, 4979)]