281316815

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1\times {\mathrm{587}}^1$

素因数の和:779

約数の個数: 32

約数和(自身を含む): 372810816

約数和(自身を除く): 91494001

約数列:

[1, 5, 13, 65, 73, 101, 365, 505, 587, 949, 1313, 2935, 4745, 6565, 7373, 7631, 36865, 38155, 42851, 59287, 95849, 214255, 296435, 479245, 557063, 770731, 2785315, 3853655, 4327951, 21639755, 56263363, 281316815]

約数ペア:

[(1, 281316815), (5, 56263363), (13, 21639755), (65, 4327951), (73, 3853655), (101, 2785315), (365, 770731), (505, 557063), (587, 479245), (949, 296435), (1313, 214255), (2935, 95849), (4745, 59287), (6565, 42851), (7373, 38155), (7631, 36865)]