28717255

素因数分解:

$5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:315

約数の個数: 32

約数和(自身を含む): 40777344

約数和(自身を除く): 12060089

約数列:

[1, 5, 7, 35, 53, 113, 137, 265, 371, 565, 685, 791, 959, 1855, 3955, 4795, 5989, 7261, 15481, 29945, 36305, 41923, 50827, 77405, 108367, 209615, 254135, 541835, 820493, 4102465, 5743451, 28717255]

約数ペア:

[(1, 28717255), (5, 5743451), (7, 4102465), (35, 820493), (53, 541835), (113, 254135), (137, 209615), (265, 108367), (371, 77405), (565, 50827), (685, 41923), (791, 36305), (959, 29945), (1855, 15481), (3955, 7261), (4795, 5989)]