21080601

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:326

約数の個数: 32

約数和(自身を含む): 32457600

約数和(自身を除く): 11376999

約数列:

[1, 3, 9, 27, 41, 123, 137, 139, 369, 411, 417, 1107, 1233, 1251, 3699, 3753, 5617, 5699, 16851, 17097, 19043, 50553, 51291, 57129, 151659, 153873, 171387, 514161, 780763, 2342289, 7026867, 21080601]

約数ペア:

[(1, 21080601), (3, 7026867), (9, 2342289), (27, 780763), (41, 514161), (123, 171387), (137, 153873), (139, 151659), (369, 57129), (411, 51291), (417, 50553), (1107, 19043), (1233, 17097), (1251, 16851), (3699, 5699), (3753, 5617)]