21682215

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{6983}}^1$

素因数の和:7020

約数の個数: 32

約数和(自身を含む): 40227840

約数和(自身を除く): 18545625

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 6983, 20949, 34915, 62847, 104745, 160609, 188541, 314235, 481827, 803045, 942705, 1445481, 2409135, 4336443, 7227405, 21682215]

約数ペア:

[(1, 21682215), (3, 7227405), (5, 4336443), (9, 2409135), (15, 1445481), (23, 942705), (27, 803045), (45, 481827), (69, 314235), (115, 188541), (135, 160609), (207, 104745), (345, 62847), (621, 34915), (1035, 20949), (3105, 6983)]