19515344

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1$

素因数の和:539

約数の個数: 40

約数和(自身を含む): 39372480

約数和(自身を除く): 19857136

約数列:

[1, 2, 4, 8, 16, 41, 71, 82, 142, 164, 284, 328, 419, 568, 656, 838, 1136, 1676, 2911, 3352, 5822, 6704, 11644, 17179, 23288, 29749, 34358, 46576, 59498, 68716, 118996, 137432, 237992, 274864, 475984, 1219709, 2439418, 4878836, 9757672, 19515344]

約数ペア:

[(1, 19515344), (2, 9757672), (4, 4878836), (8, 2439418), (16, 1219709), (41, 475984), (71, 274864), (82, 237992), (142, 137432), (164, 118996), (284, 68716), (328, 59498), (419, 46576), (568, 34358), (656, 29749), (838, 23288), (1136, 17179), (1676, 11644), (2911, 6704), (3352, 5822)]