21791945

素因数分解:

$5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 31069440

約数和(自身を除く): 9277495

約数列:

[1, 5, 7, 35, 59, 61, 173, 295, 305, 413, 427, 865, 1211, 2065, 2135, 3599, 6055, 10207, 10553, 17995, 25193, 51035, 52765, 71449, 73871, 125965, 357245, 369355, 622627, 3113135, 4358389, 21791945]

約数ペア:

[(1, 21791945), (5, 4358389), (7, 3113135), (35, 622627), (59, 369355), (61, 357245), (173, 125965), (295, 73871), (305, 71449), (413, 52765), (427, 51035), (865, 25193), (1211, 17995), (2065, 10553), (2135, 10207), (3599, 6055)]