21620912

素因数分解:

$2^4\times {\mathrm{97}}^1\times {\mathrm{13931}}^1$

素因数の和:14036

約数の個数: 20

約数和(自身を含む): 42325416

約数和(自身を除く): 20704504

約数列:

[1, 2, 4, 8, 16, 97, 194, 388, 776, 1552, 13931, 27862, 55724, 111448, 222896, 1351307, 2702614, 5405228, 10810456, 21620912]

約数ペア:

[(1, 21620912), (2, 10810456), (4, 5405228), (8, 2702614), (16, 1351307), (97, 222896), (194, 111448), (388, 55724), (776, 27862), (1552, 13931)]