21161985

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2309}}^1$

素因数の和:2377

約数の個数: 32

約数和(自身を含む): 37255680

約数和(自身を除く): 16093695

約数列:

[1, 3, 5, 13, 15, 39, 47, 65, 141, 195, 235, 611, 705, 1833, 2309, 3055, 6927, 9165, 11545, 30017, 34635, 90051, 108523, 150085, 325569, 450255, 542615, 1410799, 1627845, 4232397, 7053995, 21161985]

約数ペア:

[(1, 21161985), (3, 7053995), (5, 4232397), (13, 1627845), (15, 1410799), (39, 542615), (47, 450255), (65, 325569), (141, 150085), (195, 108523), (235, 90051), (611, 34635), (705, 30017), (1833, 11545), (2309, 9165), (3055, 6927)]