20443215

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2557}}^1$

素因数の和:2619

約数の個数: 32

約数和(自身を含む): 36098496

約数和(自身を除く): 15655281

約数列:

[1, 3, 5, 13, 15, 39, 41, 65, 123, 195, 205, 533, 615, 1599, 2557, 2665, 7671, 7995, 12785, 33241, 38355, 99723, 104837, 166205, 314511, 498615, 524185, 1362881, 1572555, 4088643, 6814405, 20443215]

約数ペア:

[(1, 20443215), (3, 6814405), (5, 4088643), (13, 1572555), (15, 1362881), (39, 524185), (41, 498615), (65, 314511), (123, 166205), (195, 104837), (205, 99723), (533, 38355), (615, 33241), (1599, 12785), (2557, 7995), (2665, 7671)]