21201050

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^3\times {\mathrm{193}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 42939960

約数和(自身を除く): 21738910

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 169, 193, 325, 338, 386, 650, 845, 965, 1690, 1930, 2197, 2509, 4225, 4394, 4825, 5018, 8450, 9650, 10985, 12545, 21970, 25090, 32617, 54925, 62725, 65234, 109850, 125450, 163085, 326170, 424021, 815425, 848042, 1630850, 2120105, 4240210, 10600525, 21201050]

約数ペア:

[(1, 21201050), (2, 10600525), (5, 4240210), (10, 2120105), (13, 1630850), (25, 848042), (26, 815425), (50, 424021), (65, 326170), (130, 163085), (169, 125450), (193, 109850), (325, 65234), (338, 62725), (386, 54925), (650, 32617), (845, 25090), (965, 21970), (1690, 12545), (1930, 10985), (2197, 9650), (2509, 8450), (4225, 5018), (4394, 4825)]