20843025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^2$

素因数の和:123

約数の個数: 72

約数和(自身を含む): 41872320

約数和(自身を除く): 21029295

約数列:

[1, 3, 5, 7, 15, 21, 25, 29, 35, 37, 75, 87, 105, 111, 145, 175, 185, 203, 259, 435, 525, 555, 609, 725, 777, 925, 1015, 1073, 1295, 1369, 2175, 2775, 3045, 3219, 3885, 4107, 5075, 5365, 6475, 6845, 7511, 9583, 15225, 16095, 19425, 20535, 22533, 26825, 28749, 34225, 37555, 39701, 47915, 80475, 102675, 112665, 119103, 143745, 187775, 198505, 239575, 277907, 563325, 595515, 718725, 833721, 992525, 1389535, 2977575, 4168605, 6947675, 20843025]

約数ペア:

[(1, 20843025), (3, 6947675), (5, 4168605), (7, 2977575), (15, 1389535), (21, 992525), (25, 833721), (29, 718725), (35, 595515), (37, 563325), (75, 277907), (87, 239575), (105, 198505), (111, 187775), (145, 143745), (175, 119103), (185, 112665), (203, 102675), (259, 80475), (435, 47915), (525, 39701), (555, 37555), (609, 34225), (725, 28749), (777, 26825), (925, 22533), (1015, 20535), (1073, 19425), (1295, 16095), (1369, 15225), (2175, 9583), (2775, 7511), (3045, 6845), (3219, 6475), (3885, 5365), (4107, 5075)]