20403070

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2063}}^1$

素因数の和:2136

約数の個数: 32

約数和(自身を含む): 39232512

約数和(自身を除く): 18829442

約数列:

[1, 2, 5, 10, 23, 43, 46, 86, 115, 215, 230, 430, 989, 1978, 2063, 4126, 4945, 9890, 10315, 20630, 47449, 88709, 94898, 177418, 237245, 443545, 474490, 887090, 2040307, 4080614, 10201535, 20403070]

約数ペア:

[(1, 20403070), (2, 10201535), (5, 4080614), (10, 2040307), (23, 887090), (43, 474490), (46, 443545), (86, 237245), (115, 177418), (215, 94898), (230, 88709), (430, 47449), (989, 20630), (1978, 10315), (2063, 9890), (4126, 4945)]