2177980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 5354496

約数和(自身を除く): 3176516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 331, 470, 658, 662, 940, 1316, 1324, 1645, 1655, 2317, 3290, 3310, 4634, 6580, 6620, 9268, 11585, 15557, 23170, 31114, 46340, 62228, 77785, 108899, 155570, 217798, 311140, 435596, 544495, 1088990, 2177980]

約数ペア:

[(1, 2177980), (2, 1088990), (4, 544495), (5, 435596), (7, 311140), (10, 217798), (14, 155570), (20, 108899), (28, 77785), (35, 62228), (47, 46340), (70, 31114), (94, 23170), (140, 15557), (188, 11585), (235, 9268), (329, 6620), (331, 6580), (470, 4634), (658, 3310), (662, 3290), (940, 2317), (1316, 1655), (1324, 1645)]