20070820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13033}}^1$

素因数の和:13060

約数の個数: 48

約数和(自身を含む): 52553088

約数和(自身を除く): 32482268

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13033, 26066, 52132, 65165, 91231, 130330, 143363, 182462, 260660, 286726, 364924, 456155, 573452, 716815, 912310, 1003541, 1433630, 1824620, 2007082, 2867260, 4014164, 5017705, 10035410, 20070820]

約数ペア:

[(1, 20070820), (2, 10035410), (4, 5017705), (5, 4014164), (7, 2867260), (10, 2007082), (11, 1824620), (14, 1433630), (20, 1003541), (22, 912310), (28, 716815), (35, 573452), (44, 456155), (55, 364924), (70, 286726), (77, 260660), (110, 182462), (140, 143363), (154, 130330), (220, 91231), (308, 65165), (385, 52132), (770, 26066), (1540, 13033)]