820562080

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{394501}}^1$

素因数の和:394529

約数の個数: 48

約数和(自身を含む): 2087704584

約数和(自身を除く): 1267142504

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 394501, 789002, 1578004, 1972505, 3156008, 3945010, 5128513, 6312016, 7890020, 10257026, 12624032, 15780040, 20514052, 25642565, 31560080, 41028104, 51285130, 63120160, 82056208, 102570260, 164112416, 205140520, 410281040, 820562080]

約数ペア:

[(1, 820562080), (2, 410281040), (4, 205140520), (5, 164112416), (8, 102570260), (10, 82056208), (13, 63120160), (16, 51285130), (20, 41028104), (26, 31560080), (32, 25642565), (40, 20514052), (52, 15780040), (65, 12624032), (80, 10257026), (104, 7890020), (130, 6312016), (160, 5128513), (208, 3945010), (260, 3156008), (416, 1972505), (520, 1578004), (1040, 789002), (2080, 394501)]