18631425

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 32372928

約数和(自身を除く): 13741503

約数列:

[1, 3, 5, 15, 25, 41, 73, 75, 83, 123, 205, 219, 249, 365, 415, 615, 1025, 1095, 1245, 1825, 2075, 2993, 3075, 3403, 5475, 6059, 6225, 8979, 10209, 14965, 17015, 18177, 30295, 44895, 51045, 74825, 85075, 90885, 151475, 224475, 248419, 255225, 454425, 745257, 1242095, 3726285, 6210475, 18631425]

約数ペア:

[(1, 18631425), (3, 6210475), (5, 3726285), (15, 1242095), (25, 745257), (41, 454425), (73, 255225), (75, 248419), (83, 224475), (123, 151475), (205, 90885), (219, 85075), (249, 74825), (365, 51045), (415, 44895), (615, 30295), (1025, 18177), (1095, 17015), (1245, 14965), (1825, 10209), (2075, 8979), (2993, 6225), (3075, 6059), (3403, 5475)]