21000891230

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2145137}}^1$

素因数の和:2145244

約数の個数: 32

約数和(自身を含む): 41701482720

約数和(自身を除く): 20700591490

約数列:

[1, 2, 5, 10, 11, 22, 55, 89, 110, 178, 445, 890, 979, 1958, 4895, 9790, 2145137, 4290274, 10725685, 21451370, 23596507, 47193014, 117982535, 190917193, 235965070, 381834386, 954585965, 1909171930, 2100089123, 4200178246, 10500445615, 21000891230]

約数ペア:

[(1, 21000891230), (2, 10500445615), (5, 4200178246), (10, 2100089123), (11, 1909171930), (22, 954585965), (55, 381834386), (89, 235965070), (110, 190917193), (178, 117982535), (445, 47193014), (890, 23596507), (979, 21451370), (1958, 10725685), (4895, 4290274), (9790, 2145137)]