28904720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27793}}^1$

素因数の和:27819

約数の個数: 40

約数和(自身を含む): 72375576

約数和(自身を除く): 43470856

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 27793, 55586, 111172, 138965, 222344, 277930, 361309, 444688, 555860, 722618, 1111720, 1445236, 1806545, 2223440, 2890472, 3613090, 5780944, 7226180, 14452360, 28904720]

約数ペア:

[(1, 28904720), (2, 14452360), (4, 7226180), (5, 5780944), (8, 3613090), (10, 2890472), (13, 2223440), (16, 1806545), (20, 1445236), (26, 1111720), (40, 722618), (52, 555860), (65, 444688), (80, 361309), (104, 277930), (130, 222344), (208, 138965), (260, 111172), (520, 55586), (1040, 27793)]