21330500

素因数分解:

$2^2\times 5^3\times {\mathrm{37}}^1\times {\mathrm{1153}}^1$

素因数の和:1209

約数の個数: 48

約数和(自身を含む): 47886384

約数和(自身を除く): 26555884

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 125, 148, 185, 250, 370, 500, 740, 925, 1153, 1850, 2306, 3700, 4612, 4625, 5765, 9250, 11530, 18500, 23060, 28825, 42661, 57650, 85322, 115300, 144125, 170644, 213305, 288250, 426610, 576500, 853220, 1066525, 2133050, 4266100, 5332625, 10665250, 21330500]

約数ペア:

[(1, 21330500), (2, 10665250), (4, 5332625), (5, 4266100), (10, 2133050), (20, 1066525), (25, 853220), (37, 576500), (50, 426610), (74, 288250), (100, 213305), (125, 170644), (148, 144125), (185, 115300), (250, 85322), (370, 57650), (500, 42661), (740, 28825), (925, 23060), (1153, 18500), (1850, 11530), (2306, 9250), (3700, 5765), (4612, 4625)]