21721898

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{7207}}^1$

素因数の和:7357

約数の個数: 16

約数和(自身を含む): 35809344

約数和(自身を除く): 14087446

約数列:

[1, 2, 11, 22, 137, 274, 1507, 3014, 7207, 14414, 79277, 158554, 987359, 1974718, 10860949, 21721898]

約数ペア:

[(1, 21721898), (2, 10860949), (11, 1974718), (22, 987359), (137, 158554), (274, 79277), (1507, 14414), (3014, 7207)]