680020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{281}}^1$

素因数の和:312

約数の個数: 36

約数和(自身を含む): 1575252

約数和(自身を除く): 895232

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 281, 484, 562, 605, 1124, 1210, 1405, 2420, 2810, 3091, 5620, 6182, 12364, 15455, 30910, 34001, 61820, 68002, 136004, 170005, 340010, 680020]

約数ペア:

[(1, 680020), (2, 340010), (4, 170005), (5, 136004), (10, 68002), (11, 61820), (20, 34001), (22, 30910), (44, 15455), (55, 12364), (110, 6182), (121, 5620), (220, 3091), (242, 2810), (281, 2420), (484, 1405), (562, 1210), (605, 1124)]