20354848

素因数分解:

$2^5\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:146

約数の個数: 72

約数和(自身を含む): 44561664

約数和(自身を除く): 24206816

約数列:

[1, 2, 4, 8, 16, 17, 31, 32, 34, 62, 68, 71, 124, 136, 142, 248, 272, 284, 289, 496, 527, 544, 568, 578, 992, 1054, 1136, 1156, 1207, 2108, 2201, 2272, 2312, 2414, 4216, 4402, 4624, 4828, 8432, 8804, 8959, 9248, 9656, 16864, 17608, 17918, 19312, 20519, 35216, 35836, 37417, 38624, 41038, 70432, 71672, 74834, 82076, 143344, 149668, 164152, 286688, 299336, 328304, 598672, 636089, 656608, 1197344, 1272178, 2544356, 5088712, 10177424, 20354848]

約数ペア:

[(1, 20354848), (2, 10177424), (4, 5088712), (8, 2544356), (16, 1272178), (17, 1197344), (31, 656608), (32, 636089), (34, 598672), (62, 328304), (68, 299336), (71, 286688), (124, 164152), (136, 149668), (142, 143344), (248, 82076), (272, 74834), (284, 71672), (289, 70432), (496, 41038), (527, 38624), (544, 37417), (568, 35836), (578, 35216), (992, 20519), (1054, 19312), (1136, 17918), (1156, 17608), (1207, 16864), (2108, 9656), (2201, 9248), (2272, 8959), (2312, 8804), (2414, 8432), (4216, 4828), (4402, 4624)]