20802019970

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1\times {\mathrm{197}}^1\times {\mathrm{911}}^1$

素因数の和:1355

約数の個数: 64

約数和(自身を含む): 38458354176

約数和(自身を除く): 17656334206

約数列:

[1, 2, 5, 10, 67, 134, 173, 197, 335, 346, 394, 670, 865, 911, 985, 1730, 1822, 1970, 4555, 9110, 11591, 13199, 23182, 26398, 34081, 57955, 61037, 65995, 68162, 115910, 122074, 131990, 157603, 170405, 179467, 305185, 315206, 340810, 358934, 610370, 788015, 897335, 1576030, 1794670, 2283427, 4566854, 10559401, 11417135, 12024289, 21118802, 22834270, 24048578, 31047791, 52797005, 60121445, 62095582, 105594010, 120242890, 155238955, 310477910, 2080201997, 4160403994, 10401009985, 20802019970]

約数ペア:

[(1, 20802019970), (2, 10401009985), (5, 4160403994), (10, 2080201997), (67, 310477910), (134, 155238955), (173, 120242890), (197, 105594010), (335, 62095582), (346, 60121445), (394, 52797005), (670, 31047791), (865, 24048578), (911, 22834270), (985, 21118802), (1730, 12024289), (1822, 11417135), (1970, 10559401), (4555, 4566854), (9110, 2283427), (11591, 1794670), (13199, 1576030), (23182, 897335), (26398, 788015), (34081, 610370), (57955, 358934), (61037, 340810), (65995, 315206), (68162, 305185), (115910, 179467), (122074, 170405), (131990, 157603)]