20863375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{347}}^1$

素因数の和:412

約数の個数: 32

約数和(自身を含む): 28881216

約数和(自身を除く): 8017841

約数列:

[1, 5, 13, 25, 37, 65, 125, 185, 325, 347, 481, 925, 1625, 1735, 2405, 4511, 4625, 8675, 12025, 12839, 22555, 43375, 60125, 64195, 112775, 166907, 320975, 563875, 834535, 1604875, 4172675, 20863375]

約数ペア:

[(1, 20863375), (5, 4172675), (13, 1604875), (25, 834535), (37, 563875), (65, 320975), (125, 166907), (185, 112775), (325, 64195), (347, 60125), (481, 43375), (925, 22555), (1625, 12839), (1735, 12025), (2405, 8675), (4511, 4625)]