20998030

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{1187}}^1$

素因数の和:1284

約数の個数: 32

約数和(自身を含む): 39774240

約数和(自身を除く): 18776210

約数列:

[1, 2, 5, 10, 29, 58, 61, 122, 145, 290, 305, 610, 1187, 1769, 2374, 3538, 5935, 8845, 11870, 17690, 34423, 68846, 72407, 144814, 172115, 344230, 362035, 724070, 2099803, 4199606, 10499015, 20998030]

約数ペア:

[(1, 20998030), (2, 10499015), (5, 4199606), (10, 2099803), (29, 724070), (58, 362035), (61, 344230), (122, 172115), (145, 144814), (290, 72407), (305, 68846), (610, 34423), (1187, 17690), (1769, 11870), (2374, 8845), (3538, 5935)]