20498478

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3413}}^1$

素因数の和:3449

約数の個数: 64

約数和(自身を含む): 55060992

約数和(自身を除く): 34562514

約数列:

[1, 2, 3, 6, 7, 11, 13, 14, 21, 22, 26, 33, 39, 42, 66, 77, 78, 91, 143, 154, 182, 231, 273, 286, 429, 462, 546, 858, 1001, 2002, 3003, 3413, 6006, 6826, 10239, 20478, 23891, 37543, 44369, 47782, 71673, 75086, 88738, 112629, 133107, 143346, 225258, 262801, 266214, 310583, 488059, 525602, 621166, 788403, 931749, 976118, 1464177, 1576806, 1863498, 2928354, 3416413, 6832826, 10249239, 20498478]

約数ペア:

[(1, 20498478), (2, 10249239), (3, 6832826), (6, 3416413), (7, 2928354), (11, 1863498), (13, 1576806), (14, 1464177), (21, 976118), (22, 931749), (26, 788403), (33, 621166), (39, 525602), (42, 488059), (66, 310583), (77, 266214), (78, 262801), (91, 225258), (143, 143346), (154, 133107), (182, 112629), (231, 88738), (273, 75086), (286, 71673), (429, 47782), (462, 44369), (546, 37543), (858, 23891), (1001, 20478), (2002, 10239), (3003, 6826), (3413, 6006)]