20563120

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{6947}}^1$

素因数の和:6997

約数の個数: 40

約数和(自身を含む): 49108464

約数和(自身を除く): 28545344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 6947, 13894, 27788, 34735, 55576, 69470, 111152, 138940, 257039, 277880, 514078, 555760, 1028156, 1285195, 2056312, 2570390, 4112624, 5140780, 10281560, 20563120]

約数ペア:

[(1, 20563120), (2, 10281560), (4, 5140780), (5, 4112624), (8, 2570390), (10, 2056312), (16, 1285195), (20, 1028156), (37, 555760), (40, 514078), (74, 277880), (80, 257039), (148, 138940), (185, 111152), (296, 69470), (370, 55576), (592, 34735), (740, 27788), (1480, 13894), (2960, 6947)]