20448350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{193}}^1$

素因数の和:381

約数の個数: 48

約数和(自身を含む): 41424432

約数和(自身を除く): 20976082

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 163, 193, 325, 326, 386, 650, 815, 965, 1630, 1930, 2119, 2509, 4075, 4238, 4825, 5018, 8150, 9650, 10595, 12545, 21190, 25090, 31459, 52975, 62725, 62918, 105950, 125450, 157295, 314590, 408967, 786475, 817934, 1572950, 2044835, 4089670, 10224175, 20448350]

約数ペア:

[(1, 20448350), (2, 10224175), (5, 4089670), (10, 2044835), (13, 1572950), (25, 817934), (26, 786475), (50, 408967), (65, 314590), (130, 157295), (163, 125450), (193, 105950), (325, 62918), (326, 62725), (386, 52975), (650, 31459), (815, 25090), (965, 21190), (1630, 12545), (1930, 10595), (2119, 9650), (2509, 8150), (4075, 5018), (4238, 4825)]