721441989

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{3461}}^1$

素因数の和:3562

約数の個数: 48

約数和(自身を含む): 1166555520

約数和(自身を除く): 445113531

約数列:

[1, 3, 9, 19, 23, 53, 57, 69, 159, 171, 207, 437, 477, 1007, 1219, 1311, 3021, 3461, 3657, 3933, 9063, 10383, 10971, 23161, 31149, 65759, 69483, 79603, 183433, 197277, 208449, 238809, 550299, 591831, 716427, 1512457, 1650897, 3485227, 4218959, 4537371, 10455681, 12656877, 13612113, 31367043, 37970631, 80160221, 240480663, 721441989]

約数ペア:

[(1, 721441989), (3, 240480663), (9, 80160221), (19, 37970631), (23, 31367043), (53, 13612113), (57, 12656877), (69, 10455681), (159, 4537371), (171, 4218959), (207, 3485227), (437, 1650897), (477, 1512457), (1007, 716427), (1219, 591831), (1311, 550299), (3021, 238809), (3461, 208449), (3657, 197277), (3933, 183433), (9063, 79603), (10383, 69483), (10971, 65759), (23161, 31149)]