219999340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{757}}^1\times {\mathrm{1321}}^1$

素因数の和:2098

約数の個数: 48

約数和(自身を含む): 505046304

約数和(自身を除く): 285046964

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 757, 1321, 1514, 2642, 3028, 3785, 5284, 6605, 7570, 8327, 13210, 14531, 15140, 16654, 26420, 29062, 33308, 41635, 58124, 72655, 83270, 145310, 166540, 290620, 999997, 1999994, 3999988, 4999985, 9999970, 10999967, 19999940, 21999934, 43999868, 54999835, 109999670, 219999340]

約数ペア:

[(1, 219999340), (2, 109999670), (4, 54999835), (5, 43999868), (10, 21999934), (11, 19999940), (20, 10999967), (22, 9999970), (44, 4999985), (55, 3999988), (110, 1999994), (220, 999997), (757, 290620), (1321, 166540), (1514, 145310), (2642, 83270), (3028, 72655), (3785, 58124), (5284, 41635), (6605, 33308), (7570, 29062), (8327, 26420), (13210, 16654), (14531, 15140)]