216650785

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{1361}}^1$

素因数の和:1489

約数の個数: 32

約数和(自身を含む): 292884480

約数和(自身を除く): 76233695

約数列:

[1, 5, 13, 31, 65, 79, 155, 395, 403, 1027, 1361, 2015, 2449, 5135, 6805, 12245, 17693, 31837, 42191, 88465, 107519, 159185, 210955, 537595, 548483, 1397747, 2742415, 3333089, 6988735, 16665445, 43330157, 216650785]

約数ペア:

[(1, 216650785), (5, 43330157), (13, 16665445), (31, 6988735), (65, 3333089), (79, 2742415), (155, 1397747), (395, 548483), (403, 537595), (1027, 210955), (1361, 159185), (2015, 107519), (2449, 88465), (5135, 42191), (6805, 31837), (12245, 17693)]