20861456

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:133

約数の個数: 120

約数和(自身を含む): 53434080

約数和(自身を除く): 32572624

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 41, 44, 49, 56, 59, 77, 82, 88, 98, 112, 118, 154, 164, 176, 196, 236, 287, 308, 328, 392, 413, 451, 472, 539, 574, 616, 649, 656, 784, 826, 902, 944, 1078, 1148, 1232, 1298, 1652, 1804, 2009, 2156, 2296, 2419, 2596, 2891, 3157, 3304, 3608, 4018, 4312, 4543, 4592, 4838, 5192, 5782, 6314, 6608, 7216, 8036, 8624, 9086, 9676, 10384, 11564, 12628, 16072, 16933, 18172, 19352, 22099, 23128, 25256, 26609, 31801, 32144, 33866, 36344, 38704, 44198, 46256, 50512, 53218, 63602, 67732, 72688, 88396, 106436, 118531, 127204, 135464, 176792, 186263, 212872, 237062, 254408, 270928, 353584, 372526, 425744, 474124, 508816, 745052, 948248, 1303841, 1490104, 1896496, 2607682, 2980208, 5215364, 10430728, 20861456]

約数ペア:

[(1, 20861456), (2, 10430728), (4, 5215364), (7, 2980208), (8, 2607682), (11, 1896496), (14, 1490104), (16, 1303841), (22, 948248), (28, 745052), (41, 508816), (44, 474124), (49, 425744), (56, 372526), (59, 353584), (77, 270928), (82, 254408), (88, 237062), (98, 212872), (112, 186263), (118, 176792), (154, 135464), (164, 127204), (176, 118531), (196, 106436), (236, 88396), (287, 72688), (308, 67732), (328, 63602), (392, 53218), (413, 50512), (451, 46256), (472, 44198), (539, 38704), (574, 36344), (616, 33866), (649, 32144), (656, 31801), (784, 26609), (826, 25256), (902, 23128), (944, 22099), (1078, 19352), (1148, 18172), (1232, 16933), (1298, 16072), (1652, 12628), (1804, 11564), (2009, 10384), (2156, 9676), (2296, 9086), (2419, 8624), (2596, 8036), (2891, 7216), (3157, 6608), (3304, 6314), (3608, 5782), (4018, 5192), (4312, 4838), (4543, 4592)]