28138220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1619}}^1$

素因数の和:1718

約数の個数: 48

約数和(自身を含む): 65318400

約数和(自身を除く): 37180180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 1580, 1619, 1738, 3238, 3476, 4345, 6476, 8095, 8690, 16190, 17380, 17809, 32380, 35618, 71236, 89045, 127901, 178090, 255802, 356180, 511604, 639505, 1279010, 1406911, 2558020, 2813822, 5627644, 7034555, 14069110, 28138220]

約数ペア:

[(1, 28138220), (2, 14069110), (4, 7034555), (5, 5627644), (10, 2813822), (11, 2558020), (20, 1406911), (22, 1279010), (44, 639505), (55, 511604), (79, 356180), (110, 255802), (158, 178090), (220, 127901), (316, 89045), (395, 71236), (790, 35618), (869, 32380), (1580, 17809), (1619, 17380), (1738, 16190), (3238, 8690), (3476, 8095), (4345, 6476)]