81690700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:272

約数の個数: 144

約数和(自身を含む): 223985664

約数和(自身を除く): 142294964

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 47, 50, 52, 65, 70, 91, 94, 100, 130, 140, 175, 182, 188, 191, 235, 260, 325, 329, 350, 364, 382, 455, 470, 611, 650, 658, 700, 764, 910, 940, 955, 1175, 1222, 1300, 1316, 1337, 1645, 1820, 1910, 2275, 2350, 2444, 2483, 2674, 3055, 3290, 3820, 4277, 4550, 4700, 4775, 4966, 5348, 6110, 6580, 6685, 8225, 8554, 8977, 9100, 9550, 9932, 12220, 12415, 13370, 15275, 16450, 17108, 17381, 17954, 19100, 21385, 24830, 26740, 30550, 32900, 33425, 34762, 35908, 42770, 44885, 49660, 61100, 62075, 62839, 66850, 69524, 85540, 86905, 89770, 106925, 116701, 124150, 125678, 133700, 173810, 179540, 213850, 224425, 233402, 248300, 251356, 314195, 347620, 427700, 434525, 448850, 466804, 583505, 628390, 816907, 869050, 897700, 1167010, 1256780, 1570975, 1633814, 1738100, 2334020, 2917525, 3141950, 3267628, 4084535, 5835050, 6283900, 8169070, 11670100, 16338140, 20422675, 40845350, 81690700]

約数ペア:

[(1, 81690700), (2, 40845350), (4, 20422675), (5, 16338140), (7, 11670100), (10, 8169070), (13, 6283900), (14, 5835050), (20, 4084535), (25, 3267628), (26, 3141950), (28, 2917525), (35, 2334020), (47, 1738100), (50, 1633814), (52, 1570975), (65, 1256780), (70, 1167010), (91, 897700), (94, 869050), (100, 816907), (130, 628390), (140, 583505), (175, 466804), (182, 448850), (188, 434525), (191, 427700), (235, 347620), (260, 314195), (325, 251356), (329, 248300), (350, 233402), (364, 224425), (382, 213850), (455, 179540), (470, 173810), (611, 133700), (650, 125678), (658, 124150), (700, 116701), (764, 106925), (910, 89770), (940, 86905), (955, 85540), (1175, 69524), (1222, 66850), (1300, 62839), (1316, 62075), (1337, 61100), (1645, 49660), (1820, 44885), (1910, 42770), (2275, 35908), (2350, 34762), (2444, 33425), (2483, 32900), (2674, 30550), (3055, 26740), (3290, 24830), (3820, 21385), (4277, 19100), (4550, 17954), (4700, 17381), (4775, 17108), (4966, 16450), (5348, 15275), (6110, 13370), (6580, 12415), (6685, 12220), (8225, 9932), (8554, 9550), (8977, 9100)]