21411054

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:339

約数の個数: 80

約数和(自身を含む): 55756800

約数和(自身を除く): 34345746

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 79, 81, 126, 158, 162, 189, 237, 239, 378, 474, 478, 553, 567, 711, 717, 1106, 1134, 1422, 1434, 1659, 1673, 2133, 2151, 3318, 3346, 4266, 4302, 4977, 5019, 6399, 6453, 9954, 10038, 12798, 12906, 14931, 15057, 18881, 19359, 29862, 30114, 37762, 38718, 44793, 45171, 56643, 89586, 90342, 113286, 132167, 135513, 169929, 264334, 271026, 339858, 396501, 509787, 793002, 1019574, 1189503, 1529361, 2379006, 3058722, 3568509, 7137018, 10705527, 21411054]

約数ペア:

[(1, 21411054), (2, 10705527), (3, 7137018), (6, 3568509), (7, 3058722), (9, 2379006), (14, 1529361), (18, 1189503), (21, 1019574), (27, 793002), (42, 509787), (54, 396501), (63, 339858), (79, 271026), (81, 264334), (126, 169929), (158, 135513), (162, 132167), (189, 113286), (237, 90342), (239, 89586), (378, 56643), (474, 45171), (478, 44793), (553, 38718), (567, 37762), (711, 30114), (717, 29862), (1106, 19359), (1134, 18881), (1422, 15057), (1434, 14931), (1659, 12906), (1673, 12798), (2133, 10038), (2151, 9954), (3318, 6453), (3346, 6399), (4266, 5019), (4302, 4977)]