21421730

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{1307}}^1$

素因数の和:1474

約数の個数: 32

約数和(自身を含む): 42379200

約数和(自身を除く): 20957470

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 149, 298, 745, 1307, 1490, 1639, 2614, 3278, 6535, 8195, 13070, 14377, 16390, 28754, 71885, 143770, 194743, 389486, 973715, 1947430, 2142173, 4284346, 10710865, 21421730]

約数ペア:

[(1, 21421730), (2, 10710865), (5, 4284346), (10, 2142173), (11, 1947430), (22, 973715), (55, 389486), (110, 194743), (149, 143770), (298, 71885), (745, 28754), (1307, 16390), (1490, 14377), (1639, 13070), (2614, 8195), (3278, 6535)]