72281979

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2819}}^1$

素因数の和:2880

約数の個数: 48

約数和(自身を含む): 133735680

約数和(自身を除く): 61453701

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 63, 77, 99, 111, 231, 259, 333, 407, 693, 777, 1221, 2331, 2819, 2849, 3663, 8457, 8547, 19733, 25371, 25641, 31009, 59199, 93027, 104303, 177597, 217063, 279081, 312909, 651189, 730121, 938727, 1147333, 1953567, 2190363, 3441999, 6571089, 8031331, 10325997, 24093993, 72281979]

約数ペア:

[(1, 72281979), (3, 24093993), (7, 10325997), (9, 8031331), (11, 6571089), (21, 3441999), (33, 2190363), (37, 1953567), (63, 1147333), (77, 938727), (99, 730121), (111, 651189), (231, 312909), (259, 279081), (333, 217063), (407, 177597), (693, 104303), (777, 93027), (1221, 59199), (2331, 31009), (2819, 25641), (2849, 25371), (3663, 19733), (8457, 8547)]