20499765

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{503}}^1$

素因数の和:554

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 20142795

約数列:

[1, 3, 5, 11, 13, 15, 19, 33, 39, 55, 57, 65, 95, 143, 165, 195, 209, 247, 285, 429, 503, 627, 715, 741, 1045, 1235, 1509, 2145, 2515, 2717, 3135, 3705, 5533, 6539, 7545, 8151, 9557, 13585, 16599, 19617, 27665, 28671, 32695, 40755, 47785, 71929, 82995, 98085, 105127, 124241, 143355, 215787, 315381, 359645, 372723, 525635, 621205, 1078935, 1366651, 1576905, 1863615, 4099953, 6833255, 20499765]

約数ペア:

[(1, 20499765), (3, 6833255), (5, 4099953), (11, 1863615), (13, 1576905), (15, 1366651), (19, 1078935), (33, 621205), (39, 525635), (55, 372723), (57, 359645), (65, 315381), (95, 215787), (143, 143355), (165, 124241), (195, 105127), (209, 98085), (247, 82995), (285, 71929), (429, 47785), (503, 40755), (627, 32695), (715, 28671), (741, 27665), (1045, 19617), (1235, 16599), (1509, 13585), (2145, 9557), (2515, 8151), (2717, 7545), (3135, 6539), (3705, 5533)]