20915882

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{599}}^1$

素因数の和:710

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 15372118

約数列:

[1, 2, 13, 17, 26, 34, 79, 158, 221, 442, 599, 1027, 1198, 1343, 2054, 2686, 7787, 10183, 15574, 17459, 20366, 34918, 47321, 94642, 132379, 264758, 615173, 804457, 1230346, 1608914, 10457941, 20915882]

約数ペア:

[(1, 20915882), (2, 10457941), (13, 1608914), (17, 1230346), (26, 804457), (34, 615173), (79, 264758), (158, 132379), (221, 94642), (442, 47321), (599, 34918), (1027, 20366), (1198, 17459), (1343, 15574), (2054, 10183), (2686, 7787)]