19918600

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:239

約数の個数: 96

約数和(自身を含む): 51246720

約数和(自身を除く): 31328120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 47, 50, 52, 65, 94, 100, 104, 130, 163, 188, 200, 235, 260, 325, 326, 376, 470, 520, 611, 650, 652, 815, 940, 1175, 1222, 1300, 1304, 1630, 1880, 2119, 2350, 2444, 2600, 3055, 3260, 4075, 4238, 4700, 4888, 6110, 6520, 7661, 8150, 8476, 9400, 10595, 12220, 15275, 15322, 16300, 16952, 21190, 24440, 30550, 30644, 32600, 38305, 42380, 52975, 61100, 61288, 76610, 84760, 99593, 105950, 122200, 153220, 191525, 199186, 211900, 306440, 383050, 398372, 423800, 497965, 766100, 796744, 995930, 1532200, 1991860, 2489825, 3983720, 4979650, 9959300, 19918600]

約数ペア:

[(1, 19918600), (2, 9959300), (4, 4979650), (5, 3983720), (8, 2489825), (10, 1991860), (13, 1532200), (20, 995930), (25, 796744), (26, 766100), (40, 497965), (47, 423800), (50, 398372), (52, 383050), (65, 306440), (94, 211900), (100, 199186), (104, 191525), (130, 153220), (163, 122200), (188, 105950), (200, 99593), (235, 84760), (260, 76610), (325, 61288), (326, 61100), (376, 52975), (470, 42380), (520, 38305), (611, 32600), (650, 30644), (652, 30550), (815, 24440), (940, 21190), (1175, 16952), (1222, 16300), (1300, 15322), (1304, 15275), (1630, 12220), (1880, 10595), (2119, 9400), (2350, 8476), (2444, 8150), (2600, 7661), (3055, 6520), (3260, 6110), (4075, 4888), (4238, 4700)]