81315585

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1433}}^1$

素因数の和:1554

約数の個数: 48

約数和(自身を含む): 153460944

約数和(自身を除く): 72145359

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 97, 117, 195, 291, 485, 585, 873, 1261, 1433, 1455, 3783, 4299, 4365, 6305, 7165, 11349, 12897, 18629, 18915, 21495, 55887, 56745, 64485, 93145, 139001, 167661, 279435, 417003, 695005, 838305, 1251009, 1807013, 2085015, 5421039, 6255045, 9035065, 16263117, 27105195, 81315585]

約数ペア:

[(1, 81315585), (3, 27105195), (5, 16263117), (9, 9035065), (13, 6255045), (15, 5421039), (39, 2085015), (45, 1807013), (65, 1251009), (97, 838305), (117, 695005), (195, 417003), (291, 279435), (485, 167661), (585, 139001), (873, 93145), (1261, 64485), (1433, 56745), (1455, 55887), (3783, 21495), (4299, 18915), (4365, 18629), (6305, 12897), (7165, 11349)]