20638788

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{691}}^1$

素因数の和:848

約数の個数: 48

約数和(自身を含む): 51152640

約数和(自身を除く): 30513852

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 131, 228, 262, 393, 524, 691, 786, 1382, 1572, 2073, 2489, 2764, 4146, 4978, 7467, 8292, 9956, 13129, 14934, 26258, 29868, 39387, 52516, 78774, 90521, 157548, 181042, 271563, 362084, 543126, 1086252, 1719899, 3439798, 5159697, 6879596, 10319394, 20638788]

約数ペア:

[(1, 20638788), (2, 10319394), (3, 6879596), (4, 5159697), (6, 3439798), (12, 1719899), (19, 1086252), (38, 543126), (57, 362084), (76, 271563), (114, 181042), (131, 157548), (228, 90521), (262, 78774), (393, 52516), (524, 39387), (691, 29868), (786, 26258), (1382, 14934), (1572, 13129), (2073, 9956), (2489, 8292), (2764, 7467), (4146, 4978)]