21543344

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{181}}^1$

素因数の和:405

約数の個数: 40

約数和(自身を含む): 43195152

約数和(自身を除く): 21651808

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 173, 181, 344, 346, 362, 688, 692, 724, 1384, 1448, 2768, 2896, 7439, 7783, 14878, 15566, 29756, 31132, 31313, 59512, 62264, 62626, 119024, 124528, 125252, 250504, 501008, 1346459, 2692918, 5385836, 10771672, 21543344]

約数ペア:

[(1, 21543344), (2, 10771672), (4, 5385836), (8, 2692918), (16, 1346459), (43, 501008), (86, 250504), (172, 125252), (173, 124528), (181, 119024), (344, 62626), (346, 62264), (362, 59512), (688, 31313), (692, 31132), (724, 29756), (1384, 15566), (1448, 14878), (2768, 7783), (2896, 7439)]