20038640

素因数分解:

$2^4\times 5^1\times {\mathrm{463}}^1\times {\mathrm{541}}^1$

素因数の和:1017

約数の個数: 40

約数和(自身を含む): 46776768

約数和(自身を除く): 26738128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 463, 541, 926, 1082, 1852, 2164, 2315, 2705, 3704, 4328, 4630, 5410, 7408, 8656, 9260, 10820, 18520, 21640, 37040, 43280, 250483, 500966, 1001932, 1252415, 2003864, 2504830, 4007728, 5009660, 10019320, 20038640]

約数ペア:

[(1, 20038640), (2, 10019320), (4, 5009660), (5, 4007728), (8, 2504830), (10, 2003864), (16, 1252415), (20, 1001932), (40, 500966), (80, 250483), (463, 43280), (541, 37040), (926, 21640), (1082, 18520), (1852, 10820), (2164, 9260), (2315, 8656), (2705, 7408), (3704, 5410), (4328, 4630)]