20681860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{1031}}^1$

素因数の和:1116

約数の個数: 48

約数和(自身を含む): 46811520

約数和(自身を除く): 26129660

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 59, 68, 85, 118, 170, 236, 295, 340, 590, 1003, 1031, 1180, 2006, 2062, 4012, 4124, 5015, 5155, 10030, 10310, 17527, 20060, 20620, 35054, 60829, 70108, 87635, 121658, 175270, 243316, 304145, 350540, 608290, 1034093, 1216580, 2068186, 4136372, 5170465, 10340930, 20681860]

約数ペア:

[(1, 20681860), (2, 10340930), (4, 5170465), (5, 4136372), (10, 2068186), (17, 1216580), (20, 1034093), (34, 608290), (59, 350540), (68, 304145), (85, 243316), (118, 175270), (170, 121658), (236, 87635), (295, 70108), (340, 60829), (590, 35054), (1003, 20620), (1031, 20060), (1180, 17527), (2006, 10310), (2062, 10030), (4012, 5155), (4124, 5015)]