21214928

素因数分解:

$2^4\times 7^1\times {\mathrm{307}}^1\times {\mathrm{617}}^1$

素因数の和:939

約数の個数: 40

約数和(自身を含む): 47205312

約数和(自身を除く): 25990384

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 307, 614, 617, 1228, 1234, 2149, 2456, 2468, 4298, 4319, 4912, 4936, 8596, 8638, 9872, 17192, 17276, 34384, 34552, 69104, 189419, 378838, 757676, 1325933, 1515352, 2651866, 3030704, 5303732, 10607464, 21214928]

約数ペア:

[(1, 21214928), (2, 10607464), (4, 5303732), (7, 3030704), (8, 2651866), (14, 1515352), (16, 1325933), (28, 757676), (56, 378838), (112, 189419), (307, 69104), (614, 34552), (617, 34384), (1228, 17276), (1234, 17192), (2149, 9872), (2456, 8638), (2468, 8596), (4298, 4936), (4319, 4912)]