21214515

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{6967}}^1$

素因数の和:7011

約数の個数: 32

約数和(自身を含む): 40135680

約数和(自身を除く): 18921165

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 87, 105, 145, 203, 435, 609, 1015, 3045, 6967, 20901, 34835, 48769, 104505, 146307, 202043, 243845, 606129, 731535, 1010215, 1414301, 3030645, 4242903, 7071505, 21214515]

約数ペア:

[(1, 21214515), (3, 7071505), (5, 4242903), (7, 3030645), (15, 1414301), (21, 1010215), (29, 731535), (35, 606129), (87, 243845), (105, 202043), (145, 146307), (203, 104505), (435, 48769), (609, 34835), (1015, 20901), (3045, 6967)]