131378560

素因数分解:

$2^7\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1993}}^1$

素因数の和:2115

約数の個数: 64

約数和(自身を含む): 317285280

約数和(自身を除く): 185906720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 103, 128, 160, 206, 320, 412, 515, 640, 824, 1030, 1648, 1993, 2060, 3296, 3986, 4120, 6592, 7972, 8240, 9965, 13184, 15944, 16480, 19930, 31888, 32960, 39860, 63776, 65920, 79720, 127552, 159440, 205279, 255104, 318880, 410558, 637760, 821116, 1026395, 1275520, 1642232, 2052790, 3284464, 4105580, 6568928, 8211160, 13137856, 16422320, 26275712, 32844640, 65689280, 131378560]

約数ペア:

[(1, 131378560), (2, 65689280), (4, 32844640), (5, 26275712), (8, 16422320), (10, 13137856), (16, 8211160), (20, 6568928), (32, 4105580), (40, 3284464), (64, 2052790), (80, 1642232), (103, 1275520), (128, 1026395), (160, 821116), (206, 637760), (320, 410558), (412, 318880), (515, 255104), (640, 205279), (824, 159440), (1030, 127552), (1648, 79720), (1993, 65920), (2060, 63776), (3296, 39860), (3986, 32960), (4120, 31888), (6592, 19930), (7972, 16480), (8240, 15944), (9965, 13184)]