21419365

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{199}}^1$

素因数の和:337

約数の個数: 32

約数和(自身を含む): 29952000

約数和(自身を除く): 8532635

約数列:

[1, 5, 11, 19, 55, 95, 103, 199, 209, 515, 995, 1045, 1133, 1957, 2189, 3781, 5665, 9785, 10945, 18905, 20497, 21527, 41591, 102485, 107635, 207955, 225467, 389443, 1127335, 1947215, 4283873, 21419365]

約数ペア:

[(1, 21419365), (5, 4283873), (11, 1947215), (19, 1127335), (55, 389443), (95, 225467), (103, 207955), (199, 107635), (209, 102485), (515, 41591), (995, 21527), (1045, 20497), (1133, 18905), (1957, 10945), (2189, 9785), (3781, 5665)]