21720322

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{313}}^1$

素因数の和:502

約数の個数: 32

約数和(自身を含む): 37506672

約数和(自身を除く): 15786350

約数列:

[1, 2, 13, 17, 26, 34, 157, 221, 313, 314, 442, 626, 2041, 2669, 4069, 4082, 5321, 5338, 8138, 10642, 34697, 49141, 69173, 69394, 98282, 138346, 638833, 835397, 1277666, 1670794, 10860161, 21720322]

約数ペア:

[(1, 21720322), (2, 10860161), (13, 1670794), (17, 1277666), (26, 835397), (34, 638833), (157, 138346), (221, 98282), (313, 69394), (314, 69173), (442, 49141), (626, 34697), (2041, 10642), (2669, 8138), (4069, 5338), (4082, 5321)]