2051207920

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{2797}}^1$

素因数の和:3002

約数の個数: 80

約数和(自身を含む): 4871206080

約数和(自身を除く): 2819998160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 103, 178, 206, 356, 412, 445, 515, 712, 824, 890, 1030, 1424, 1648, 1780, 2060, 2797, 3560, 4120, 5594, 7120, 8240, 9167, 11188, 13985, 18334, 22376, 27970, 36668, 44752, 45835, 55940, 73336, 91670, 111880, 146672, 183340, 223760, 248933, 288091, 366680, 497866, 576182, 733360, 995732, 1152364, 1244665, 1440455, 1991464, 2304728, 2489330, 2880910, 3982928, 4609456, 4978660, 5761820, 9957320, 11523640, 19914640, 23047280, 25640099, 51280198, 102560396, 128200495, 205120792, 256400990, 410241584, 512801980, 1025603960, 2051207920]

約数ペア:

[(1, 2051207920), (2, 1025603960), (4, 512801980), (5, 410241584), (8, 256400990), (10, 205120792), (16, 128200495), (20, 102560396), (40, 51280198), (80, 25640099), (89, 23047280), (103, 19914640), (178, 11523640), (206, 9957320), (356, 5761820), (412, 4978660), (445, 4609456), (515, 3982928), (712, 2880910), (824, 2489330), (890, 2304728), (1030, 1991464), (1424, 1440455), (1648, 1244665), (1780, 1152364), (2060, 995732), (2797, 733360), (3560, 576182), (4120, 497866), (5594, 366680), (7120, 288091), (8240, 248933), (9167, 223760), (11188, 183340), (13985, 146672), (18334, 111880), (22376, 91670), (27970, 73336), (36668, 55940), (44752, 45835)]