81638080

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:426

約数の個数: 112

約数和(自身を含む): 211226400

約数和(自身を除く): 129588320

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 43, 64, 68, 80, 85, 86, 136, 160, 170, 172, 215, 272, 320, 340, 344, 349, 430, 544, 680, 688, 698, 731, 860, 1088, 1360, 1376, 1396, 1462, 1720, 1745, 2720, 2752, 2792, 2924, 3440, 3490, 3655, 5440, 5584, 5848, 5933, 6880, 6980, 7310, 11168, 11696, 11866, 13760, 13960, 14620, 15007, 22336, 23392, 23732, 27920, 29240, 29665, 30014, 46784, 47464, 55840, 58480, 59330, 60028, 75035, 94928, 111680, 116960, 118660, 120056, 150070, 189856, 233920, 237320, 240112, 255119, 300140, 379712, 474640, 480224, 510238, 600280, 949280, 960448, 1020476, 1200560, 1275595, 1898560, 2040952, 2401120, 2551190, 4081904, 4802240, 5102380, 8163808, 10204760, 16327616, 20409520, 40819040, 81638080]

約数ペア:

[(1, 81638080), (2, 40819040), (4, 20409520), (5, 16327616), (8, 10204760), (10, 8163808), (16, 5102380), (17, 4802240), (20, 4081904), (32, 2551190), (34, 2401120), (40, 2040952), (43, 1898560), (64, 1275595), (68, 1200560), (80, 1020476), (85, 960448), (86, 949280), (136, 600280), (160, 510238), (170, 480224), (172, 474640), (215, 379712), (272, 300140), (320, 255119), (340, 240112), (344, 237320), (349, 233920), (430, 189856), (544, 150070), (680, 120056), (688, 118660), (698, 116960), (731, 111680), (860, 94928), (1088, 75035), (1360, 60028), (1376, 59330), (1396, 58480), (1462, 55840), (1720, 47464), (1745, 46784), (2720, 30014), (2752, 29665), (2792, 29240), (2924, 27920), (3440, 23732), (3490, 23392), (3655, 22336), (5440, 15007), (5584, 14620), (5848, 13960), (5933, 13760), (6880, 11866), (6980, 11696), (7310, 11168)]