21840286

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{311}}^1$

素因数の和:436

約数の個数: 32

約数和(自身を含む): 36848448

約数和(自身を除く): 15008162

約数列:

[1, 2, 13, 26, 37, 73, 74, 146, 311, 481, 622, 949, 962, 1898, 2701, 4043, 5402, 8086, 11507, 22703, 23014, 35113, 45406, 70226, 149591, 295139, 299182, 590278, 840011, 1680022, 10920143, 21840286]

約数ペア:

[(1, 21840286), (2, 10920143), (13, 1680022), (26, 840011), (37, 590278), (73, 299182), (74, 295139), (146, 149591), (311, 70226), (481, 45406), (622, 35113), (949, 23014), (962, 22703), (1898, 11507), (2701, 8086), (4043, 5402)]