1991860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 4628736

約数和(自身を除く): 2636876

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 163, 188, 235, 260, 326, 470, 611, 652, 815, 940, 1222, 1630, 2119, 2444, 3055, 3260, 4238, 6110, 7661, 8476, 10595, 12220, 15322, 21190, 30644, 38305, 42380, 76610, 99593, 153220, 199186, 398372, 497965, 995930, 1991860]

約数ペア:

[(1, 1991860), (2, 995930), (4, 497965), (5, 398372), (10, 199186), (13, 153220), (20, 99593), (26, 76610), (47, 42380), (52, 38305), (65, 30644), (94, 21190), (130, 15322), (163, 12220), (188, 10595), (235, 8476), (260, 7661), (326, 6110), (470, 4238), (611, 3260), (652, 3055), (815, 2444), (940, 2119), (1222, 1630)]