21019450

素因数分解:

$2^1\times 5^2\times {\mathrm{359}}^1\times {\mathrm{1171}}^1$

素因数の和:1542

約数の個数: 24

約数和(自身を含む): 39238560

約数和(自身を除く): 18219110

約数列:

[1, 2, 5, 10, 25, 50, 359, 718, 1171, 1795, 2342, 3590, 5855, 8975, 11710, 17950, 29275, 58550, 420389, 840778, 2101945, 4203890, 10509725, 21019450]

約数ペア:

[(1, 21019450), (2, 10509725), (5, 4203890), (10, 2101945), (25, 840778), (50, 420389), (359, 58550), (718, 29275), (1171, 17950), (1795, 11710), (2342, 8975), (3590, 5855)]