686995790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{1223}}^1$

素因数の和:1421

約数の個数: 64

約数和(自身を含む): 1388016000

約数和(自身を除く): 701020210

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 149, 290, 298, 377, 745, 754, 1223, 1490, 1885, 1937, 2446, 3770, 3874, 4321, 6115, 8642, 9685, 12230, 15899, 19370, 21605, 31798, 35467, 43210, 56173, 70934, 79495, 112346, 158990, 177335, 182227, 280865, 354670, 364454, 461071, 561730, 911135, 922142, 1822270, 2305355, 2368951, 4610710, 4737902, 5284583, 10569166, 11844755, 23689510, 26422915, 52845830, 68699579, 137399158, 343497895, 686995790]

約数ペア:

[(1, 686995790), (2, 343497895), (5, 137399158), (10, 68699579), (13, 52845830), (26, 26422915), (29, 23689510), (58, 11844755), (65, 10569166), (130, 5284583), (145, 4737902), (149, 4610710), (290, 2368951), (298, 2305355), (377, 1822270), (745, 922142), (754, 911135), (1223, 561730), (1490, 461071), (1885, 364454), (1937, 354670), (2446, 280865), (3770, 182227), (3874, 177335), (4321, 158990), (6115, 112346), (8642, 79495), (9685, 70934), (12230, 56173), (15899, 43210), (19370, 35467), (21605, 31798)]