20980330

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{911}}^1$

素因数の和:979

約数の個数: 48

約数和(自身を含む): 44914176

約数和(自身を除く): 23933846

約数列:

[1, 2, 5, 7, 10, 14, 35, 47, 49, 70, 94, 98, 235, 245, 329, 470, 490, 658, 911, 1645, 1822, 2303, 3290, 4555, 4606, 6377, 9110, 11515, 12754, 23030, 31885, 42817, 44639, 63770, 85634, 89278, 214085, 223195, 299719, 428170, 446390, 599438, 1498595, 2098033, 2997190, 4196066, 10490165, 20980330]

約数ペア:

[(1, 20980330), (2, 10490165), (5, 4196066), (7, 2997190), (10, 2098033), (14, 1498595), (35, 599438), (47, 446390), (49, 428170), (70, 299719), (94, 223195), (98, 214085), (235, 89278), (245, 85634), (329, 63770), (470, 44639), (490, 42817), (658, 31885), (911, 23030), (1645, 12754), (1822, 11515), (2303, 9110), (3290, 6377), (4555, 4606)]