20268470

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{223}}^1$

素因数の和:440

約数の個数: 32

約数和(自身を含む): 37497600

約数和(自身を除く): 17229130

約数列:

[1, 2, 5, 10, 61, 122, 149, 223, 298, 305, 446, 610, 745, 1115, 1490, 2230, 9089, 13603, 18178, 27206, 33227, 45445, 66454, 68015, 90890, 136030, 166135, 332270, 2026847, 4053694, 10134235, 20268470]

約数ペア:

[(1, 20268470), (2, 10134235), (5, 4053694), (10, 2026847), (61, 332270), (122, 166135), (149, 136030), (223, 90890), (298, 68015), (305, 66454), (446, 45445), (610, 33227), (745, 27206), (1115, 18178), (1490, 13603), (2230, 9089)]