19951312

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{617}}^1$

素因数の和:715

約数の個数: 40

約数和(自身を含む): 40461696

約数和(自身を除く): 20510384

約数列:

[1, 2, 4, 8, 16, 43, 47, 86, 94, 172, 188, 344, 376, 617, 688, 752, 1234, 2021, 2468, 4042, 4936, 8084, 9872, 16168, 26531, 28999, 32336, 53062, 57998, 106124, 115996, 212248, 231992, 424496, 463984, 1246957, 2493914, 4987828, 9975656, 19951312]

約数ペア:

[(1, 19951312), (2, 9975656), (4, 4987828), (8, 2493914), (16, 1246957), (43, 463984), (47, 424496), (86, 231992), (94, 212248), (172, 115996), (188, 106124), (344, 57998), (376, 53062), (617, 32336), (688, 28999), (752, 26531), (1234, 16168), (2021, 9872), (2468, 8084), (4042, 4936)]