81229760

素因数分解:

$2^6\times 5^1\times {\mathrm{313}}^1\times {\mathrm{811}}^1$

素因数の和:1141

約数の個数: 56

約数和(自身を含む): 194285616

約数和(自身を除く): 113055856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 313, 320, 626, 811, 1252, 1565, 1622, 2504, 3130, 3244, 4055, 5008, 6260, 6488, 8110, 10016, 12520, 12976, 16220, 20032, 25040, 25952, 32440, 50080, 51904, 64880, 100160, 129760, 253843, 259520, 507686, 1015372, 1269215, 2030744, 2538430, 4061488, 5076860, 8122976, 10153720, 16245952, 20307440, 40614880, 81229760]

約数ペア:

[(1, 81229760), (2, 40614880), (4, 20307440), (5, 16245952), (8, 10153720), (10, 8122976), (16, 5076860), (20, 4061488), (32, 2538430), (40, 2030744), (64, 1269215), (80, 1015372), (160, 507686), (313, 259520), (320, 253843), (626, 129760), (811, 100160), (1252, 64880), (1565, 51904), (1622, 50080), (2504, 32440), (3130, 25952), (3244, 25040), (4055, 20032), (5008, 16220), (6260, 12976), (6488, 12520), (8110, 10016)]