178293780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1993}}^1$

素因数の和:2086

約数の個数: 144

約数和(自身を含む): 627105024

約数和(自身を除く): 448811244

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, 1993, 2130, 2485, 2556, 2982, 3195, 3986, 4260, 4473, 4970, 5964, 5979, 6390, 7455, 7972, 8946, 9940, 9965, 11958, 12780, 13951, 14910, 17892, 17937, 19930, 22365, 23916, 27902, 29820, 29895, 35874, 39860, 41853, 44730, 55804, 59790, 69755, 71748, 83706, 89460, 89685, 119580, 125559, 139510, 141503, 167412, 179370, 209265, 251118, 279020, 283006, 358740, 418530, 424509, 502236, 566012, 627795, 707515, 837060, 849018, 990521, 1255590, 1273527, 1415030, 1698036, 1981042, 2122545, 2511180, 2547054, 2830060, 2971563, 3962084, 4245090, 4952605, 5094108, 5943126, 6367635, 8490180, 8914689, 9905210, 11886252, 12735270, 14857815, 17829378, 19810420, 25470540, 29715630, 35658756, 44573445, 59431260, 89146890, 178293780]

約数ペア:

[(1, 178293780), (2, 89146890), (3, 59431260), (4, 44573445), (5, 35658756), (6, 29715630), (7, 25470540), (9, 19810420), (10, 17829378), (12, 14857815), (14, 12735270), (15, 11886252), (18, 9905210), (20, 8914689), (21, 8490180), (28, 6367635), (30, 5943126), (35, 5094108), (36, 4952605), (42, 4245090), (45, 3962084), (60, 2971563), (63, 2830060), (70, 2547054), (71, 2511180), (84, 2122545), (90, 1981042), (105, 1698036), (126, 1415030), (140, 1273527), (142, 1255590), (180, 990521), (210, 849018), (213, 837060), (252, 707515), (284, 627795), (315, 566012), (355, 502236), (420, 424509), (426, 418530), (497, 358740), (630, 283006), (639, 279020), (710, 251118), (852, 209265), (994, 179370), (1065, 167412), (1260, 141503), (1278, 139510), (1420, 125559), (1491, 119580), (1988, 89685), (1993, 89460), (2130, 83706), (2485, 71748), (2556, 69755), (2982, 59790), (3195, 55804), (3986, 44730), (4260, 41853), (4473, 39860), (4970, 35874), (5964, 29895), (5979, 29820), (6390, 27902), (7455, 23916), (7972, 22365), (8946, 19930), (9940, 17937), (9965, 17892), (11958, 14910), (12780, 13951)]