21097590968

素因数分解:

$2^3\times {\mathrm{409}}^1\times {\mathrm{6447919}}^1$

素因数の和:6448334

約数の個数: 16

約数和(自身を含む): 39654708000

約数和(自身を除く): 18557117032

約数列:

[1, 2, 4, 8, 409, 818, 1636, 3272, 6447919, 12895838, 25791676, 51583352, 2637198871, 5274397742, 10548795484, 21097590968]

約数ペア:

[(1, 21097590968), (2, 10548795484), (4, 5274397742), (8, 2637198871), (409, 51583352), (818, 25791676), (1636, 12895838), (3272, 6447919)]