20560890

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:292

約数の個数: 96

約数和(自身を含む): 58506624

約数和(自身を除く): 37945734

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 71, 98, 105, 142, 147, 197, 210, 213, 245, 294, 355, 394, 426, 490, 497, 591, 710, 735, 985, 994, 1065, 1182, 1379, 1470, 1491, 1970, 2130, 2485, 2758, 2955, 2982, 3479, 4137, 4970, 5910, 6895, 6958, 7455, 8274, 9653, 10437, 13790, 13987, 14910, 17395, 19306, 20685, 20874, 27974, 28959, 34790, 41370, 41961, 48265, 52185, 57918, 69935, 83922, 96530, 97909, 104370, 139870, 144795, 195818, 209805, 289590, 293727, 419610, 489545, 587454, 685363, 979090, 1370726, 1468635, 2056089, 2937270, 3426815, 4112178, 6853630, 10280445, 20560890]

約数ペア:

[(1, 20560890), (2, 10280445), (3, 6853630), (5, 4112178), (6, 3426815), (7, 2937270), (10, 2056089), (14, 1468635), (15, 1370726), (21, 979090), (30, 685363), (35, 587454), (42, 489545), (49, 419610), (70, 293727), (71, 289590), (98, 209805), (105, 195818), (142, 144795), (147, 139870), (197, 104370), (210, 97909), (213, 96530), (245, 83922), (294, 69935), (355, 57918), (394, 52185), (426, 48265), (490, 41961), (497, 41370), (591, 34790), (710, 28959), (735, 27974), (985, 20874), (994, 20685), (1065, 19306), (1182, 17395), (1379, 14910), (1470, 13987), (1491, 13790), (1970, 10437), (2130, 9653), (2485, 8274), (2758, 7455), (2955, 6958), (2982, 6895), (3479, 5910), (4137, 4970)]