21978684

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{6709}}^1$

素因数の和:6739

約数の個数: 72

約数和(自身を含む): 68388320

約数和(自身を除く): 46409636

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 84, 91, 117, 126, 156, 182, 234, 252, 273, 364, 468, 546, 819, 1092, 1638, 3276, 6709, 13418, 20127, 26836, 40254, 46963, 60381, 80508, 87217, 93926, 120762, 140889, 174434, 187852, 241524, 261651, 281778, 348868, 422667, 523302, 563556, 610519, 784953, 845334, 1046604, 1221038, 1569906, 1690668, 1831557, 2442076, 3139812, 3663114, 5494671, 7326228, 10989342, 21978684]

約数ペア:

[(1, 21978684), (2, 10989342), (3, 7326228), (4, 5494671), (6, 3663114), (7, 3139812), (9, 2442076), (12, 1831557), (13, 1690668), (14, 1569906), (18, 1221038), (21, 1046604), (26, 845334), (28, 784953), (36, 610519), (39, 563556), (42, 523302), (52, 422667), (63, 348868), (78, 281778), (84, 261651), (91, 241524), (117, 187852), (126, 174434), (156, 140889), (182, 120762), (234, 93926), (252, 87217), (273, 80508), (364, 60381), (468, 46963), (546, 40254), (819, 26836), (1092, 20127), (1638, 13418), (3276, 6709)]