21696147

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{229}}^1$

素因数の和:289

約数の個数: 48

約数和(自身を含む): 36708000

約数和(自身を除く): 15011853

約数列:

[1, 3, 9, 11, 27, 29, 33, 87, 99, 121, 229, 261, 297, 319, 363, 687, 783, 957, 1089, 2061, 2519, 2871, 3267, 3509, 6183, 6641, 7557, 8613, 10527, 19923, 22671, 27709, 31581, 59769, 68013, 73051, 83127, 94743, 179307, 219153, 249381, 657459, 748143, 803561, 1972377, 2410683, 7232049, 21696147]

約数ペア:

[(1, 21696147), (3, 7232049), (9, 2410683), (11, 1972377), (27, 803561), (29, 748143), (33, 657459), (87, 249381), (99, 219153), (121, 179307), (229, 94743), (261, 83127), (297, 73051), (319, 68013), (363, 59769), (687, 31581), (783, 27709), (957, 22671), (1089, 19923), (2061, 10527), (2519, 8613), (2871, 7557), (3267, 6641), (3509, 6183)]