21564770

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{353}}^1$

素因数の和:550

約数の個数: 32

約数和(自身を含む): 40143600

約数和(自身を除く): 18578830

約数列:

[1, 2, 5, 10, 41, 82, 149, 205, 298, 353, 410, 706, 745, 1490, 1765, 3530, 6109, 12218, 14473, 28946, 30545, 52597, 61090, 72365, 105194, 144730, 262985, 525970, 2156477, 4312954, 10782385, 21564770]

約数ペア:

[(1, 21564770), (2, 10782385), (5, 4312954), (10, 2156477), (41, 525970), (82, 262985), (149, 144730), (205, 105194), (298, 72365), (353, 61090), (410, 52597), (706, 30545), (745, 28946), (1490, 14473), (1765, 12218), (3530, 6109)]