20475390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{52501}}^1$

素因数の和:52524

約数の個数: 32

約数和(自身を含む): 52922016

約数和(自身を除く): 32446626

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 52501, 105002, 157503, 262505, 315006, 525010, 682513, 787515, 1365026, 1575030, 2047539, 3412565, 4095078, 6825130, 10237695, 20475390]

約数ペア:

[(1, 20475390), (2, 10237695), (3, 6825130), (5, 4095078), (6, 3412565), (10, 2047539), (13, 1575030), (15, 1365026), (26, 787515), (30, 682513), (39, 525010), (65, 315006), (78, 262505), (130, 157503), (195, 105002), (390, 52501)]