21149235

素因数分解:

$3^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3821}}^1$

素因数の和:3876

約数の個数: 32

約数和(自身を含む): 38525760

約数和(自身を除く): 17376525

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 123, 135, 205, 369, 615, 1107, 1845, 3821, 5535, 11463, 19105, 34389, 57315, 103167, 156661, 171945, 469983, 515835, 783305, 1409949, 2349915, 4229847, 7049745, 21149235]

約数ペア:

[(1, 21149235), (3, 7049745), (5, 4229847), (9, 2349915), (15, 1409949), (27, 783305), (41, 515835), (45, 469983), (123, 171945), (135, 156661), (205, 103167), (369, 57315), (615, 34389), (1107, 19105), (1845, 11463), (3821, 5535)]