17988100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:265

約数の個数: 72

約数和(自身を含む): 42762888

約数和(自身を除く): 24774788

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 101, 130, 137, 202, 260, 274, 325, 404, 505, 548, 650, 685, 1010, 1300, 1313, 1370, 1781, 2020, 2525, 2626, 2740, 3425, 3562, 5050, 5252, 6565, 6850, 7124, 8905, 10100, 13130, 13700, 13837, 17810, 26260, 27674, 32825, 35620, 44525, 55348, 65650, 69185, 89050, 131300, 138370, 178100, 179881, 276740, 345925, 359762, 691850, 719524, 899405, 1383700, 1798810, 3597620, 4497025, 8994050, 17988100]

約数ペア:

[(1, 17988100), (2, 8994050), (4, 4497025), (5, 3597620), (10, 1798810), (13, 1383700), (20, 899405), (25, 719524), (26, 691850), (50, 359762), (52, 345925), (65, 276740), (100, 179881), (101, 178100), (130, 138370), (137, 131300), (202, 89050), (260, 69185), (274, 65650), (325, 55348), (404, 44525), (505, 35620), (548, 32825), (650, 27674), (685, 26260), (1010, 17810), (1300, 13837), (1313, 13700), (1370, 13130), (1781, 10100), (2020, 8905), (2525, 7124), (2626, 6850), (2740, 6565), (3425, 5252), (3562, 5050)]