21030255

素因数分解:

$3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{89}}^2$

素因数の和:248

約数の個数: 36

約数和(自身を含む): 37491480

約数和(自身を除く): 16461225

約数列:

[1, 3, 5, 9, 15, 45, 59, 89, 177, 267, 295, 445, 531, 801, 885, 1335, 2655, 4005, 5251, 7921, 15753, 23763, 26255, 39605, 47259, 71289, 78765, 118815, 236295, 356445, 467339, 1402017, 2336695, 4206051, 7010085, 21030255]

約数ペア:

[(1, 21030255), (3, 7010085), (5, 4206051), (9, 2336695), (15, 1402017), (45, 467339), (59, 356445), (89, 236295), (177, 118815), (267, 78765), (295, 71289), (445, 47259), (531, 39605), (801, 26255), (885, 23763), (1335, 15753), (2655, 7921), (4005, 5251)]