21408848

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2539}}^1$

素因数の和:2595

約数の個数: 40

約数和(自身を含む): 45354240

約数和(自身を除く): 23945392

約数列:

[1, 2, 4, 8, 16, 17, 31, 34, 62, 68, 124, 136, 248, 272, 496, 527, 1054, 2108, 2539, 4216, 5078, 8432, 10156, 20312, 40624, 43163, 78709, 86326, 157418, 172652, 314836, 345304, 629672, 690608, 1259344, 1338053, 2676106, 5352212, 10704424, 21408848]

約数ペア:

[(1, 21408848), (2, 10704424), (4, 5352212), (8, 2676106), (16, 1338053), (17, 1259344), (31, 690608), (34, 629672), (62, 345304), (68, 314836), (124, 172652), (136, 157418), (248, 86326), (272, 78709), (496, 43163), (527, 40624), (1054, 20312), (2108, 10156), (2539, 8432), (4216, 5078)]