21791798

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{683}}^1$

素因数の和:788

約数の個数: 32

約数和(自身を含む): 39004416

約数和(自身を除く): 17212618

約数列:

[1, 2, 7, 14, 43, 53, 86, 106, 301, 371, 602, 683, 742, 1366, 2279, 4558, 4781, 9562, 15953, 29369, 31906, 36199, 58738, 72398, 205583, 253393, 411166, 506786, 1556557, 3113114, 10895899, 21791798]

約数ペア:

[(1, 21791798), (2, 10895899), (7, 3113114), (14, 1556557), (43, 506786), (53, 411166), (86, 253393), (106, 205583), (301, 72398), (371, 58738), (602, 36199), (683, 31906), (742, 29369), (1366, 15953), (2279, 9562), (4558, 4781)]