28003760

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{349}}^1$

素因数の和:438

約数の個数: 80

約数和(自身を含む): 70308000

約数和(自身を除く): 42304240

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 59, 68, 80, 85, 118, 136, 170, 236, 272, 295, 340, 349, 472, 590, 680, 698, 944, 1003, 1180, 1360, 1396, 1745, 2006, 2360, 2792, 3490, 4012, 4720, 5015, 5584, 5933, 6980, 8024, 10030, 11866, 13960, 16048, 20060, 20591, 23732, 27920, 29665, 40120, 41182, 47464, 59330, 80240, 82364, 94928, 102955, 118660, 164728, 205910, 237320, 329456, 350047, 411820, 474640, 700094, 823640, 1400188, 1647280, 1750235, 2800376, 3500470, 5600752, 7000940, 14001880, 28003760]

約数ペア:

[(1, 28003760), (2, 14001880), (4, 7000940), (5, 5600752), (8, 3500470), (10, 2800376), (16, 1750235), (17, 1647280), (20, 1400188), (34, 823640), (40, 700094), (59, 474640), (68, 411820), (80, 350047), (85, 329456), (118, 237320), (136, 205910), (170, 164728), (236, 118660), (272, 102955), (295, 94928), (340, 82364), (349, 80240), (472, 59330), (590, 47464), (680, 41182), (698, 40120), (944, 29665), (1003, 27920), (1180, 23732), (1360, 20591), (1396, 20060), (1745, 16048), (2006, 13960), (2360, 11866), (2792, 10030), (3490, 8024), (4012, 6980), (4720, 5933), (5015, 5584)]