201980155

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{113}}^1\times {\mathrm{257}}^1$

素因数の和:495

約数の個数: 32

約数和(自身を含む): 266825664

約数和(自身を除く): 64845509

約数列:

[1, 5, 13, 65, 107, 113, 257, 535, 565, 1285, 1391, 1469, 3341, 6955, 7345, 12091, 16705, 27499, 29041, 60455, 137495, 145205, 157183, 357487, 377533, 785915, 1787435, 1887665, 3107387, 15536935, 40396031, 201980155]

約数ペア:

[(1, 201980155), (5, 40396031), (13, 15536935), (65, 3107387), (107, 1887665), (113, 1787435), (257, 785915), (535, 377533), (565, 357487), (1285, 157183), (1391, 145205), (1469, 137495), (3341, 60455), (6955, 29041), (7345, 27499), (12091, 16705)]