21993650

素因数分解:

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

素因数の和:264

約数の個数: 72

約数和(自身を含む): 48854016

約数和(自身を除く): 26860366

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 47, 49, 50, 70, 94, 98, 175, 191, 235, 245, 329, 350, 382, 470, 490, 658, 955, 1175, 1225, 1337, 1645, 1910, 2303, 2350, 2450, 2674, 3290, 4606, 4775, 6685, 8225, 8977, 9359, 9550, 11515, 13370, 16450, 17954, 18718, 23030, 33425, 44885, 46795, 57575, 62839, 66850, 89770, 93590, 115150, 125678, 224425, 233975, 314195, 439873, 448850, 467950, 628390, 879746, 1570975, 2199365, 3141950, 4398730, 10996825, 21993650]

約数ペア:

[(1, 21993650), (2, 10996825), (5, 4398730), (7, 3141950), (10, 2199365), (14, 1570975), (25, 879746), (35, 628390), (47, 467950), (49, 448850), (50, 439873), (70, 314195), (94, 233975), (98, 224425), (175, 125678), (191, 115150), (235, 93590), (245, 89770), (329, 66850), (350, 62839), (382, 57575), (470, 46795), (490, 44885), (658, 33425), (955, 23030), (1175, 18718), (1225, 17954), (1337, 16450), (1645, 13370), (1910, 11515), (2303, 9550), (2350, 9359), (2450, 8977), (2674, 8225), (3290, 6685), (4606, 4775)]