19991090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{1031}}^1$

素因数の和:1322

約数の個数: 32

約数和(自身を含む): 41313024

約数和(自身を除く): 21321934

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 277, 554, 1031, 1385, 1939, 2062, 2770, 3878, 5155, 7217, 9695, 10310, 14434, 19390, 36085, 72170, 285587, 571174, 1427935, 1999109, 2855870, 3998218, 9995545, 19991090]

約数ペア:

[(1, 19991090), (2, 9995545), (5, 3998218), (7, 2855870), (10, 1999109), (14, 1427935), (35, 571174), (70, 285587), (277, 72170), (554, 36085), (1031, 19390), (1385, 14434), (1939, 10310), (2062, 9695), (2770, 7217), (3878, 5155)]