20349136

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{947}}^1$

素因数の和:1051

約数の個数: 40

約数和(自身を含む): 42318720

約数和(自身を除く): 21969584

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 79, 136, 158, 272, 316, 632, 947, 1264, 1343, 1894, 2686, 3788, 5372, 7576, 10744, 15152, 16099, 21488, 32198, 64396, 74813, 128792, 149626, 257584, 299252, 598504, 1197008, 1271821, 2543642, 5087284, 10174568, 20349136]

約数ペア:

[(1, 20349136), (2, 10174568), (4, 5087284), (8, 2543642), (16, 1271821), (17, 1197008), (34, 598504), (68, 299252), (79, 257584), (136, 149626), (158, 128792), (272, 74813), (316, 64396), (632, 32198), (947, 21488), (1264, 16099), (1343, 15152), (1894, 10744), (2686, 7576), (3788, 5372)]