20197215

素因数分解:

$3^3\times 5^1\times {\mathrm{41}}^2\times {\mathrm{89}}^1$

素因数の和:185

約数の個数: 48

約数和(自身を含む): 37216800

約数和(自身を除く): 17019585

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 89, 123, 135, 205, 267, 369, 445, 615, 801, 1107, 1335, 1681, 1845, 2403, 3649, 4005, 5043, 5535, 8405, 10947, 12015, 15129, 18245, 25215, 32841, 45387, 54735, 75645, 98523, 149609, 164205, 226935, 448827, 492615, 748045, 1346481, 2244135, 4039443, 6732405, 20197215]

約数ペア:

[(1, 20197215), (3, 6732405), (5, 4039443), (9, 2244135), (15, 1346481), (27, 748045), (41, 492615), (45, 448827), (89, 226935), (123, 164205), (135, 149609), (205, 98523), (267, 75645), (369, 54735), (445, 45387), (615, 32841), (801, 25215), (1107, 18245), (1335, 15129), (1681, 12015), (1845, 10947), (2403, 8405), (3649, 5535), (4005, 5043)]