21384255

素因数分解:

$3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{331}}^1$

素因数の和:471

約数の個数: 32

約数和(自身を含む): 35377920

約数和(自身を除く): 13993665

約数列:

[1, 3, 5, 15, 59, 73, 177, 219, 295, 331, 365, 885, 993, 1095, 1655, 4307, 4965, 12921, 19529, 21535, 24163, 58587, 64605, 72489, 97645, 120815, 292935, 362445, 1425617, 4276851, 7128085, 21384255]

約数ペア:

[(1, 21384255), (3, 7128085), (5, 4276851), (15, 1425617), (59, 362445), (73, 292935), (177, 120815), (219, 97645), (295, 72489), (331, 64605), (365, 58587), (885, 24163), (993, 21535), (1095, 19529), (1655, 12921), (4307, 4965)]