20282805

素因数分解:

$3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{821}}^1$

素因数の和:899

約数の個数: 40

約数和(自身を含む): 36999864

約数和(自身を除く): 16717059

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 81, 135, 183, 305, 405, 549, 821, 915, 1647, 2463, 2745, 4105, 4941, 7389, 8235, 12315, 22167, 24705, 36945, 50081, 66501, 110835, 150243, 250405, 332505, 450729, 751215, 1352187, 2253645, 4056561, 6760935, 20282805]

約数ペア:

[(1, 20282805), (3, 6760935), (5, 4056561), (9, 2253645), (15, 1352187), (27, 751215), (45, 450729), (61, 332505), (81, 250405), (135, 150243), (183, 110835), (305, 66501), (405, 50081), (549, 36945), (821, 24705), (915, 22167), (1647, 12315), (2463, 8235), (2745, 7389), (4105, 4941)]