21446380

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17579}}^1$

素因数の和:17649

約数の個数: 24

約数和(自身を含む): 45778320

約数和(自身を除く): 24331940

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 17579, 35158, 70316, 87895, 175790, 351580, 1072319, 2144638, 4289276, 5361595, 10723190, 21446380]

約数ペア:

[(1, 21446380), (2, 10723190), (4, 5361595), (5, 4289276), (10, 2144638), (20, 1072319), (61, 351580), (122, 175790), (244, 87895), (305, 70316), (610, 35158), (1220, 17579)]