20948396

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 43524096

約数和(自身を除く): 22575700

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 127, 137, 172, 254, 274, 301, 508, 548, 602, 889, 959, 1204, 1778, 1918, 3556, 3836, 5461, 5891, 10922, 11782, 17399, 21844, 23564, 34798, 38227, 41237, 69596, 76454, 82474, 121793, 152908, 164948, 243586, 487172, 748157, 1496314, 2992628, 5237099, 10474198, 20948396]

約数ペア:

[(1, 20948396), (2, 10474198), (4, 5237099), (7, 2992628), (14, 1496314), (28, 748157), (43, 487172), (86, 243586), (127, 164948), (137, 152908), (172, 121793), (254, 82474), (274, 76454), (301, 69596), (508, 41237), (548, 38227), (602, 34798), (889, 23564), (959, 21844), (1204, 17399), (1778, 11782), (1918, 10922), (3556, 5891), (3836, 5461)]