21756826

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{691}}^1$

素因数の和:886

約数の個数: 32

約数和(自身を含む): 40457088

約数和(自身を除く): 18700262

約数列:

[1, 2, 7, 13, 14, 26, 91, 173, 182, 346, 691, 1211, 1382, 2249, 2422, 4498, 4837, 8983, 9674, 15743, 17966, 31486, 62881, 119543, 125762, 239086, 836801, 1554059, 1673602, 3108118, 10878413, 21756826]

約数ペア:

[(1, 21756826), (2, 10878413), (7, 3108118), (13, 1673602), (14, 1554059), (26, 836801), (91, 239086), (173, 125762), (182, 119543), (346, 62881), (691, 31486), (1211, 17966), (1382, 15743), (2249, 9674), (2422, 8983), (4498, 4837)]