31220560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{283}}^1$

素因数の和:500

約数の個数: 80

約数和(自身を含む): 83673216

約数和(自身を除く): 52452656

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 197, 280, 283, 394, 560, 566, 788, 985, 1132, 1379, 1415, 1576, 1970, 1981, 2264, 2758, 2830, 3152, 3940, 3962, 4528, 5516, 5660, 6895, 7880, 7924, 9905, 11032, 11320, 13790, 15760, 15848, 19810, 22064, 22640, 27580, 31696, 39620, 55160, 55751, 79240, 110320, 111502, 158480, 223004, 278755, 390257, 446008, 557510, 780514, 892016, 1115020, 1561028, 1951285, 2230040, 3122056, 3902570, 4460080, 6244112, 7805140, 15610280, 31220560]

約数ペア:

[(1, 31220560), (2, 15610280), (4, 7805140), (5, 6244112), (7, 4460080), (8, 3902570), (10, 3122056), (14, 2230040), (16, 1951285), (20, 1561028), (28, 1115020), (35, 892016), (40, 780514), (56, 557510), (70, 446008), (80, 390257), (112, 278755), (140, 223004), (197, 158480), (280, 111502), (283, 110320), (394, 79240), (560, 55751), (566, 55160), (788, 39620), (985, 31696), (1132, 27580), (1379, 22640), (1415, 22064), (1576, 19810), (1970, 15848), (1981, 15760), (2264, 13790), (2758, 11320), (2830, 11032), (3152, 9905), (3940, 7924), (3962, 7880), (4528, 6895), (5516, 5660)]