20684768

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2617}}^1$

素因数の和:2659

約数の個数: 48

約数和(自身を含む): 46181520

約数和(自身を除く): 25496752

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, 2617, 3952, 5234, 7904, 10468, 20936, 34021, 41872, 49723, 68042, 83744, 99446, 136084, 198892, 272168, 397784, 544336, 646399, 795568, 1088672, 1292798, 1591136, 2585596, 5171192, 10342384, 20684768]

約数ペア:

[(1, 20684768), (2, 10342384), (4, 5171192), (8, 2585596), (13, 1591136), (16, 1292798), (19, 1088672), (26, 795568), (32, 646399), (38, 544336), (52, 397784), (76, 272168), (104, 198892), (152, 136084), (208, 99446), (247, 83744), (304, 68042), (416, 49723), (494, 41872), (608, 34021), (988, 20936), (1976, 10468), (2617, 7904), (3952, 5234)]