640956050

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{25793}}^1$

素因数の和:25883

約数の個数: 48

約数和(自身を含む): 1381732992

約数和(自身を除く): 740776942

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 71, 142, 175, 350, 355, 497, 710, 994, 1775, 2485, 3550, 4970, 12425, 24850, 25793, 51586, 128965, 180551, 257930, 361102, 644825, 902755, 1289650, 1805510, 1831303, 3662606, 4513775, 9027550, 9156515, 12819121, 18313030, 25638242, 45782575, 64095605, 91565150, 128191210, 320478025, 640956050]

約数ペア:

[(1, 640956050), (2, 320478025), (5, 128191210), (7, 91565150), (10, 64095605), (14, 45782575), (25, 25638242), (35, 18313030), (50, 12819121), (70, 9156515), (71, 9027550), (142, 4513775), (175, 3662606), (350, 1831303), (355, 1805510), (497, 1289650), (710, 902755), (994, 644825), (1775, 361102), (2485, 257930), (3550, 180551), (4970, 128965), (12425, 51586), (24850, 25793)]