20967875

素因数分解:

$5^3\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:188

約数の個数: 32

約数和(自身を含む): 27675648

約数和(自身を除く): 6707773

約数列:

[1, 5, 25, 43, 47, 83, 125, 215, 235, 415, 1075, 1175, 2021, 2075, 3569, 3901, 5375, 5875, 10105, 10375, 17845, 19505, 50525, 89225, 97525, 167743, 252625, 446125, 487625, 838715, 4193575, 20967875]

約数ペア:

[(1, 20967875), (5, 4193575), (25, 838715), (43, 487625), (47, 446125), (83, 252625), (125, 167743), (215, 97525), (235, 89225), (415, 50525), (1075, 19505), (1175, 17845), (2021, 10375), (2075, 10105), (3569, 5875), (3901, 5375)]