28218591

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{821}}^1$

素因数の和:916

約数の個数: 32

約数和(自身を含む): 44716800

約数和(自身を除く): 16498209

約数列:

[1, 3, 9, 19, 27, 57, 67, 171, 201, 513, 603, 821, 1273, 1809, 2463, 3819, 7389, 11457, 15599, 22167, 34371, 46797, 55007, 140391, 165021, 421173, 495063, 1045133, 1485189, 3135399, 9406197, 28218591]

約数ペア:

[(1, 28218591), (3, 9406197), (9, 3135399), (19, 1485189), (27, 1045133), (57, 495063), (67, 421173), (171, 165021), (201, 140391), (513, 55007), (603, 46797), (821, 34371), (1273, 22167), (1809, 15599), (2463, 11457), (3819, 7389)]