21917985

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{227}}^1$

素因数の和:433

約数の個数: 32

約数和(自身を含む): 36312192

約数和(自身を除く): 14394207

約数列:

[1, 3, 5, 15, 41, 123, 157, 205, 227, 471, 615, 681, 785, 1135, 2355, 3405, 6437, 9307, 19311, 27921, 32185, 35639, 46535, 96555, 106917, 139605, 178195, 534585, 1461199, 4383597, 7305995, 21917985]

約数ペア:

[(1, 21917985), (3, 7305995), (5, 4383597), (15, 1461199), (41, 534585), (123, 178195), (157, 139605), (205, 106917), (227, 96555), (471, 46535), (615, 35639), (681, 32185), (785, 27921), (1135, 19311), (2355, 9307), (3405, 6437)]