21460528

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{307}}^1$

素因数の和:589

約数の個数: 40

約数和(自身を含む): 44340912

約数和(自身を除く): 22880384

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 257, 272, 307, 514, 614, 1028, 1228, 2056, 2456, 4112, 4369, 4912, 5219, 8738, 10438, 17476, 20876, 34952, 41752, 69904, 78899, 83504, 157798, 315596, 631192, 1262384, 1341283, 2682566, 5365132, 10730264, 21460528]

約数ペア:

[(1, 21460528), (2, 10730264), (4, 5365132), (8, 2682566), (16, 1341283), (17, 1262384), (34, 631192), (68, 315596), (136, 157798), (257, 83504), (272, 78899), (307, 69904), (514, 41752), (614, 34952), (1028, 20876), (1228, 17476), (2056, 10438), (2456, 8738), (4112, 5219), (4369, 4912)]