20189205

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^2\times {\mathrm{89}}^1$

素因数の和:242

約数の個数: 36

約数和(自身を含む): 35893260

約数和(自身を除く): 15704055

約数列:

[1, 3, 5, 9, 15, 45, 71, 89, 213, 267, 355, 445, 639, 801, 1065, 1335, 3195, 4005, 5041, 6319, 15123, 18957, 25205, 31595, 45369, 56871, 75615, 94785, 226845, 284355, 448649, 1345947, 2243245, 4037841, 6729735, 20189205]

約数ペア:

[(1, 20189205), (3, 6729735), (5, 4037841), (9, 2243245), (15, 1345947), (45, 448649), (71, 284355), (89, 226845), (213, 94785), (267, 75615), (355, 56871), (445, 45369), (639, 31595), (801, 25205), (1065, 18957), (1335, 15123), (3195, 6319), (4005, 5041)]