20122775408

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{661}}^1\times {\mathrm{12119}}^1$

素因数の和:12945

約数の個数: 40

約数和(自身を含む): 39298809120

約数和(自身を除く): 19176033712

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 661, 1256, 1322, 2512, 2644, 5288, 10576, 12119, 24238, 48476, 96952, 103777, 193904, 207554, 415108, 830216, 1660432, 1902683, 3805366, 7610732, 8010659, 15221464, 16021318, 30442928, 32042636, 64085272, 128170544, 1257673463, 2515346926, 5030693852, 10061387704, 20122775408]

約数ペア:

[(1, 20122775408), (2, 10061387704), (4, 5030693852), (8, 2515346926), (16, 1257673463), (157, 128170544), (314, 64085272), (628, 32042636), (661, 30442928), (1256, 16021318), (1322, 15221464), (2512, 8010659), (2644, 7610732), (5288, 3805366), (10576, 1902683), (12119, 1660432), (24238, 830216), (48476, 415108), (96952, 207554), (103777, 193904)]