19905930

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20107}}^1$

素因数の和:20131

約数の個数: 48

約数和(自身を含む): 56463264

約数和(自身を除く): 36557334

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990, 20107, 40214, 60321, 100535, 120642, 180963, 201070, 221177, 301605, 361926, 442354, 603210, 663531, 904815, 1105885, 1327062, 1809630, 1990593, 2211770, 3317655, 3981186, 6635310, 9952965, 19905930]

約数ペア:

[(1, 19905930), (2, 9952965), (3, 6635310), (5, 3981186), (6, 3317655), (9, 2211770), (10, 1990593), (11, 1809630), (15, 1327062), (18, 1105885), (22, 904815), (30, 663531), (33, 603210), (45, 442354), (55, 361926), (66, 301605), (90, 221177), (99, 201070), (110, 180963), (165, 120642), (198, 100535), (330, 60321), (495, 40214), (990, 20107)]