178651620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1997}}^1$

素因数の和:2090

約数の個数: 144

約数和(自身を含む): 628363008

約数和(自身を除く): 449711388

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 71, 84, 90, 105, 126, 140, 142, 180, 210, 213, 252, 284, 315, 355, 420, 426, 497, 630, 639, 710, 852, 994, 1065, 1260, 1278, 1420, 1491, 1988, 1997, 2130, 2485, 2556, 2982, 3195, 3994, 4260, 4473, 4970, 5964, 5991, 6390, 7455, 7988, 8946, 9940, 9985, 11982, 12780, 13979, 14910, 17892, 17973, 19970, 22365, 23964, 27958, 29820, 29955, 35946, 39940, 41937, 44730, 55916, 59910, 69895, 71892, 83874, 89460, 89865, 119820, 125811, 139790, 141787, 167748, 179730, 209685, 251622, 279580, 283574, 359460, 419370, 425361, 503244, 567148, 629055, 708935, 838740, 850722, 992509, 1258110, 1276083, 1417870, 1701444, 1985018, 2126805, 2516220, 2552166, 2835740, 2977527, 3970036, 4253610, 4962545, 5104332, 5955054, 6380415, 8507220, 8932581, 9925090, 11910108, 12760830, 14887635, 17865162, 19850180, 25521660, 29775270, 35730324, 44662905, 59550540, 89325810, 178651620]

約数ペア:

[(1, 178651620), (2, 89325810), (3, 59550540), (4, 44662905), (5, 35730324), (6, 29775270), (7, 25521660), (9, 19850180), (10, 17865162), (12, 14887635), (14, 12760830), (15, 11910108), (18, 9925090), (20, 8932581), (21, 8507220), (28, 6380415), (30, 5955054), (35, 5104332), (36, 4962545), (42, 4253610), (45, 3970036), (60, 2977527), (63, 2835740), (70, 2552166), (71, 2516220), (84, 2126805), (90, 1985018), (105, 1701444), (126, 1417870), (140, 1276083), (142, 1258110), (180, 992509), (210, 850722), (213, 838740), (252, 708935), (284, 629055), (315, 567148), (355, 503244), (420, 425361), (426, 419370), (497, 359460), (630, 283574), (639, 279580), (710, 251622), (852, 209685), (994, 179730), (1065, 167748), (1260, 141787), (1278, 139790), (1420, 125811), (1491, 119820), (1988, 89865), (1997, 89460), (2130, 83874), (2485, 71892), (2556, 69895), (2982, 59910), (3195, 55916), (3994, 44730), (4260, 41937), (4473, 39940), (4970, 35946), (5964, 29955), (5991, 29820), (6390, 27958), (7455, 23964), (7988, 22365), (8946, 19970), (9940, 17973), (9985, 17892), (11982, 14910), (12780, 13979)]