21800872

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{1087}}^1$

素因数の和:1225

約数の個数: 32

約数和(自身を含む): 43084800

約数和(自身を除く): 21283928

約数列:

[1, 2, 4, 8, 23, 46, 92, 109, 184, 218, 436, 872, 1087, 2174, 2507, 4348, 5014, 8696, 10028, 20056, 25001, 50002, 100004, 118483, 200008, 236966, 473932, 947864, 2725109, 5450218, 10900436, 21800872]

約数ペア:

[(1, 21800872), (2, 10900436), (4, 5450218), (8, 2725109), (23, 947864), (46, 473932), (92, 236966), (109, 200008), (184, 118483), (218, 100004), (436, 50002), (872, 25001), (1087, 20056), (2174, 10028), (2507, 8696), (4348, 5014)]