20556424

素因数分解:

$2^3\times 7^1\times {\mathrm{331}}^1\times {\mathrm{1109}}^1$

素因数の和:1453

約数の個数: 32

約数和(自身を含む): 44222400

約数和(自身を除く): 23665976

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 331, 662, 1109, 1324, 2218, 2317, 2648, 4436, 4634, 7763, 8872, 9268, 15526, 18536, 31052, 62104, 367079, 734158, 1468316, 2569553, 2936632, 5139106, 10278212, 20556424]

約数ペア:

[(1, 20556424), (2, 10278212), (4, 5139106), (7, 2936632), (8, 2569553), (14, 1468316), (28, 734158), (56, 367079), (331, 62104), (662, 31052), (1109, 18536), (1324, 15526), (2218, 9268), (2317, 8872), (2648, 7763), (4436, 4634)]