20711790

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20921}}^1$

素因数の和:20945

約数の個数: 48

約数和(自身を含む): 58748976

約数和(自身を除く): 38037186

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, 20921, 41842, 62763, 104605, 125526, 188289, 209210, 230131, 313815, 376578, 460262, 627630, 690393, 941445, 1150655, 1380786, 1882890, 2071179, 2301310, 3451965, 4142358, 6903930, 10355895, 20711790]

約数ペア:

[(1, 20711790), (2, 10355895), (3, 6903930), (5, 4142358), (6, 3451965), (9, 2301310), (10, 2071179), (11, 1882890), (15, 1380786), (18, 1150655), (22, 941445), (30, 690393), (33, 627630), (45, 460262), (55, 376578), (66, 313815), (90, 230131), (99, 209210), (110, 188289), (165, 125526), (198, 104605), (330, 62763), (495, 41842), (990, 20921)]