20121553908

素因数分解:

$2^2\times 3^2\times {\mathrm{109}}^1\times {\mathrm{163}}^2\times {\mathrm{193}}^1$

素因数の和:638

約数の個数: 108

約数和(自身を含む): 51913882020

約数和(自身を除く): 31792328112

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 109, 163, 193, 218, 326, 327, 386, 436, 489, 579, 652, 654, 772, 978, 981, 1158, 1308, 1467, 1737, 1956, 1962, 2316, 2934, 3474, 3924, 5868, 6948, 17767, 21037, 26569, 31459, 35534, 42074, 53138, 53301, 62918, 63111, 71068, 79707, 84148, 94377, 106276, 106602, 125836, 126222, 159414, 159903, 188754, 189333, 213204, 239121, 252444, 283131, 318828, 319806, 377508, 378666, 478242, 566262, 639612, 757332, 956484, 1132524, 2896021, 3429031, 5127817, 5792042, 6858062, 8688063, 10255634, 10287093, 11584084, 13716124, 15383451, 17376126, 20511268, 20574186, 26064189, 30766902, 30861279, 34752252, 41148372, 46150353, 52128378, 61533804, 61722558, 92300706, 104256756, 123445116, 184601412, 558932053, 1117864106, 1676796159, 2235728212, 3353592318, 5030388477, 6707184636, 10060776954, 20121553908]

約数ペア:

[(1, 20121553908), (2, 10060776954), (3, 6707184636), (4, 5030388477), (6, 3353592318), (9, 2235728212), (12, 1676796159), (18, 1117864106), (36, 558932053), (109, 184601412), (163, 123445116), (193, 104256756), (218, 92300706), (326, 61722558), (327, 61533804), (386, 52128378), (436, 46150353), (489, 41148372), (579, 34752252), (652, 30861279), (654, 30766902), (772, 26064189), (978, 20574186), (981, 20511268), (1158, 17376126), (1308, 15383451), (1467, 13716124), (1737, 11584084), (1956, 10287093), (1962, 10255634), (2316, 8688063), (2934, 6858062), (3474, 5792042), (3924, 5127817), (5868, 3429031), (6948, 2896021), (17767, 1132524), (21037, 956484), (26569, 757332), (31459, 639612), (35534, 566262), (42074, 478242), (53138, 378666), (53301, 377508), (62918, 319806), (63111, 318828), (71068, 283131), (79707, 252444), (84148, 239121), (94377, 213204), (106276, 189333), (106602, 188754), (125836, 159903), (126222, 159414)]