21868888

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{809}}^1$

素因数の和:955

約数の個数: 32

約数和(自身を含む): 42768000

約数和(自身を除く): 20899112

約数列:

[1, 2, 4, 8, 31, 62, 109, 124, 218, 248, 436, 809, 872, 1618, 3236, 3379, 6472, 6758, 13516, 25079, 27032, 50158, 88181, 100316, 176362, 200632, 352724, 705448, 2733611, 5467222, 10934444, 21868888]

約数ペア:

[(1, 21868888), (2, 10934444), (4, 5467222), (8, 2733611), (31, 705448), (62, 352724), (109, 200632), (124, 176362), (218, 100316), (248, 88181), (436, 50158), (809, 27032), (872, 25079), (1618, 13516), (3236, 6758), (3379, 6472)]