19181984

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{953}}^1$

素因数の和:1017

約数の個数: 48

約数和(自身を含む): 41109768

約数和(自身を除く): 21927784

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 37, 68, 74, 136, 148, 272, 296, 544, 592, 629, 953, 1184, 1258, 1906, 2516, 3812, 5032, 7624, 10064, 15248, 16201, 20128, 30496, 32402, 35261, 64804, 70522, 129608, 141044, 259216, 282088, 518432, 564176, 599437, 1128352, 1198874, 2397748, 4795496, 9590992, 19181984]

約数ペア:

[(1, 19181984), (2, 9590992), (4, 4795496), (8, 2397748), (16, 1198874), (17, 1128352), (32, 599437), (34, 564176), (37, 518432), (68, 282088), (74, 259216), (136, 141044), (148, 129608), (272, 70522), (296, 64804), (544, 35261), (592, 32402), (629, 30496), (953, 20128), (1184, 16201), (1258, 15248), (1906, 10064), (2516, 7624), (3812, 5032)]