20310784

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{359}}^1$

素因数の和:405

約数の個数: 72

約数和(自身を含む): 46357920

約数和(自身を除く): 26047136

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 64, 68, 104, 128, 136, 208, 221, 256, 272, 359, 416, 442, 544, 718, 832, 884, 1088, 1436, 1664, 1768, 2176, 2872, 3328, 3536, 4352, 4667, 5744, 6103, 7072, 9334, 11488, 12206, 14144, 18668, 22976, 24412, 28288, 37336, 45952, 48824, 56576, 74672, 79339, 91904, 97648, 149344, 158678, 195296, 298688, 317356, 390592, 597376, 634712, 781184, 1194752, 1269424, 1562368, 2538848, 5077696, 10155392, 20310784]

約数ペア:

[(1, 20310784), (2, 10155392), (4, 5077696), (8, 2538848), (13, 1562368), (16, 1269424), (17, 1194752), (26, 781184), (32, 634712), (34, 597376), (52, 390592), (64, 317356), (68, 298688), (104, 195296), (128, 158678), (136, 149344), (208, 97648), (221, 91904), (256, 79339), (272, 74672), (359, 56576), (416, 48824), (442, 45952), (544, 37336), (718, 28288), (832, 24412), (884, 22976), (1088, 18668), (1436, 14144), (1664, 12206), (1768, 11488), (2176, 9334), (2872, 7072), (3328, 6103), (3536, 5744), (4352, 4667)]