871906980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{4177}}^1$

素因数の和:4274

約数の個数: 144

約数和(自身を含む): 2880614016

約数和(自身を除く): 2008707036

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 71, 84, 98, 105, 140, 142, 147, 196, 210, 213, 245, 284, 294, 355, 420, 426, 490, 497, 588, 710, 735, 852, 980, 994, 1065, 1420, 1470, 1491, 1988, 2130, 2485, 2940, 2982, 3479, 4177, 4260, 4970, 5964, 6958, 7455, 8354, 9940, 10437, 12531, 13916, 14910, 16708, 17395, 20874, 20885, 25062, 29239, 29820, 34790, 41748, 41770, 50124, 52185, 58478, 62655, 69580, 83540, 87717, 104370, 116956, 125310, 146195, 175434, 204673, 208740, 250620, 292390, 296567, 350868, 409346, 438585, 584780, 593134, 614019, 818692, 877170, 889701, 1023365, 1186268, 1228038, 1482835, 1754340, 1779402, 2046730, 2075969, 2456076, 2965670, 3070095, 3558804, 4093460, 4151938, 4448505, 5931340, 6140190, 6227907, 8303876, 8897010, 10379845, 12280380, 12455814, 14531783, 17794020, 20759690, 24911628, 29063566, 31139535, 41519380, 43595349, 58127132, 62279070, 72658915, 87190698, 124558140, 145317830, 174381396, 217976745, 290635660, 435953490, 871906980]

約数ペア:

[(1, 871906980), (2, 435953490), (3, 290635660), (4, 217976745), (5, 174381396), (6, 145317830), (7, 124558140), (10, 87190698), (12, 72658915), (14, 62279070), (15, 58127132), (20, 43595349), (21, 41519380), (28, 31139535), (30, 29063566), (35, 24911628), (42, 20759690), (49, 17794020), (60, 14531783), (70, 12455814), (71, 12280380), (84, 10379845), (98, 8897010), (105, 8303876), (140, 6227907), (142, 6140190), (147, 5931340), (196, 4448505), (210, 4151938), (213, 4093460), (245, 3558804), (284, 3070095), (294, 2965670), (355, 2456076), (420, 2075969), (426, 2046730), (490, 1779402), (497, 1754340), (588, 1482835), (710, 1228038), (735, 1186268), (852, 1023365), (980, 889701), (994, 877170), (1065, 818692), (1420, 614019), (1470, 593134), (1491, 584780), (1988, 438585), (2130, 409346), (2485, 350868), (2940, 296567), (2982, 292390), (3479, 250620), (4177, 208740), (4260, 204673), (4970, 175434), (5964, 146195), (6958, 125310), (7455, 116956), (8354, 104370), (9940, 87717), (10437, 83540), (12531, 69580), (13916, 62655), (14910, 58478), (16708, 52185), (17395, 50124), (20874, 41770), (20885, 41748), (25062, 34790), (29239, 29820)]