21373305

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 35164800

約数和(自身を除く): 13791495

約数列:

[1, 3, 5, 15, 73, 131, 149, 219, 365, 393, 447, 655, 745, 1095, 1965, 2235, 9563, 10877, 19519, 28689, 32631, 47815, 54385, 58557, 97595, 143445, 163155, 292785, 1424887, 4274661, 7124435, 21373305]

約数ペア:

[(1, 21373305), (3, 7124435), (5, 4274661), (15, 1424887), (73, 292785), (131, 163155), (149, 143445), (219, 97595), (365, 58557), (393, 54385), (447, 47815), (655, 32631), (745, 28689), (1095, 19519), (1965, 10877), (2235, 9563)]