21856137

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 31987200

約数和(自身を除く): 10131063

約数列:

[1, 3, 19, 57, 59, 67, 97, 177, 201, 291, 1121, 1273, 1843, 3363, 3819, 3953, 5529, 5723, 6499, 11859, 17169, 19497, 75107, 108737, 123481, 225321, 326211, 370443, 383441, 1150323, 7285379, 21856137]

約数ペア:

[(1, 21856137), (3, 7285379), (19, 1150323), (57, 383441), (59, 370443), (67, 326211), (97, 225321), (177, 123481), (201, 108737), (291, 75107), (1121, 19497), (1273, 17169), (1843, 11859), (3363, 6499), (3819, 5723), (3953, 5529)]