21957958

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{401}}^1$

素因数の和:564

約数の個数: 32

約数和(自身を含む): 38206080

約数和(自身を除く): 16248122

約数列:

[1, 2, 11, 19, 22, 38, 131, 209, 262, 401, 418, 802, 1441, 2489, 2882, 4411, 4978, 7619, 8822, 15238, 27379, 52531, 54758, 83809, 105062, 167618, 577841, 998089, 1155682, 1996178, 10978979, 21957958]

約数ペア:

[(1, 21957958), (2, 10978979), (11, 1996178), (19, 1155682), (22, 998089), (38, 577841), (131, 167618), (209, 105062), (262, 83809), (401, 54758), (418, 52531), (802, 27379), (1441, 15238), (2489, 8822), (2882, 7619), (4411, 4978)]