21078844

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{1297}}^1$

素因数の和:1557

約数の個数: 24

約数和(自身を含む): 39251520

約数和(自身を除く): 18172676

約数列:

[1, 2, 4, 17, 34, 68, 239, 478, 956, 1297, 2594, 4063, 5188, 8126, 16252, 22049, 44098, 88196, 309983, 619966, 1239932, 5269711, 10539422, 21078844]

約数ペア:

[(1, 21078844), (2, 10539422), (4, 5269711), (17, 1239932), (34, 619966), (68, 309983), (239, 88196), (478, 44098), (956, 22049), (1297, 16252), (2594, 8126), (4063, 5188)]