219877540

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1\times {\mathrm{439}}^1$

素因数の和:844

約数の個数: 48

約数和(自身を含む): 470131200

約数和(自身を除く): 250253660

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 317, 395, 439, 634, 790, 878, 1268, 1580, 1585, 1756, 2195, 3170, 4390, 6340, 8780, 25043, 34681, 50086, 69362, 100172, 125215, 138724, 139163, 173405, 250430, 278326, 346810, 500860, 556652, 693620, 695815, 1391630, 2783260, 10993877, 21987754, 43975508, 54969385, 109938770, 219877540]

約数ペア:

[(1, 219877540), (2, 109938770), (4, 54969385), (5, 43975508), (10, 21987754), (20, 10993877), (79, 2783260), (158, 1391630), (316, 695815), (317, 693620), (395, 556652), (439, 500860), (634, 346810), (790, 278326), (878, 250430), (1268, 173405), (1580, 139163), (1585, 138724), (1756, 125215), (2195, 100172), (3170, 69362), (4390, 50086), (6340, 34681), (8780, 25043)]