20716384

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2621}}^1$

素因数の和:2663

約数の個数: 48

約数和(自身を含む): 46252080

約数和(自身を除く): 25535696

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 247, 304, 416, 494, 608, 988, 1976, 2621, 3952, 5242, 7904, 10484, 20968, 34073, 41936, 49799, 68146, 83872, 99598, 136292, 199196, 272584, 398392, 545168, 647387, 796784, 1090336, 1294774, 1593568, 2589548, 5179096, 10358192, 20716384]

約数ペア:

[(1, 20716384), (2, 10358192), (4, 5179096), (8, 2589548), (13, 1593568), (16, 1294774), (19, 1090336), (26, 796784), (32, 647387), (38, 545168), (52, 398392), (76, 272584), (104, 199196), (152, 136292), (208, 99598), (247, 83872), (304, 68146), (416, 49799), (494, 41936), (608, 34073), (988, 20968), (1976, 10484), (2621, 7904), (3952, 5242)]