20987289310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{120209}}^1$

素因数の和:120325

約数の個数: 64

約数和(自身を含む): 43621804800

約数和(自身を除く): 22634515490

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 79, 85, 130, 158, 170, 221, 395, 442, 790, 1027, 1105, 1343, 2054, 2210, 2686, 5135, 6715, 10270, 13430, 17459, 34918, 87295, 120209, 174590, 240418, 601045, 1202090, 1562717, 2043553, 3125434, 4087106, 7813585, 9496511, 10217765, 15627170, 18993022, 20435530, 26566189, 47482555, 53132378, 94965110, 123454643, 132830945, 161440687, 246909286, 265661890, 322881374, 617273215, 807203435, 1234546430, 1614406870, 2098728931, 4197457862, 10493644655, 20987289310]

約数ペア:

[(1, 20987289310), (2, 10493644655), (5, 4197457862), (10, 2098728931), (13, 1614406870), (17, 1234546430), (26, 807203435), (34, 617273215), (65, 322881374), (79, 265661890), (85, 246909286), (130, 161440687), (158, 132830945), (170, 123454643), (221, 94965110), (395, 53132378), (442, 47482555), (790, 26566189), (1027, 20435530), (1105, 18993022), (1343, 15627170), (2054, 10217765), (2210, 9496511), (2686, 7813585), (5135, 4087106), (6715, 3125434), (10270, 2043553), (13430, 1562717), (17459, 1202090), (34918, 601045), (87295, 240418), (120209, 174590)]