21183088

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1657}}^1$

素因数の和:1729

約数の個数: 40

約数和(自身を含む): 44407872

約数和(自身を除く): 23224784

約数列:

[1, 2, 4, 8, 16, 17, 34, 47, 68, 94, 136, 188, 272, 376, 752, 799, 1598, 1657, 3196, 3314, 6392, 6628, 12784, 13256, 26512, 28169, 56338, 77879, 112676, 155758, 225352, 311516, 450704, 623032, 1246064, 1323943, 2647886, 5295772, 10591544, 21183088]

約数ペア:

[(1, 21183088), (2, 10591544), (4, 5295772), (8, 2647886), (16, 1323943), (17, 1246064), (34, 623032), (47, 450704), (68, 311516), (94, 225352), (136, 155758), (188, 112676), (272, 77879), (376, 56338), (752, 28169), (799, 26512), (1598, 13256), (1657, 12784), (3196, 6628), (3314, 6392)]