18995320

素因数分解:

$2^3\times 5^1\times {\mathrm{587}}^1\times {\mathrm{809}}^1$

素因数の和:1407

約数の個数: 32

約数和(自身を含む): 42865200

約数和(自身を除く): 23869880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 587, 809, 1174, 1618, 2348, 2935, 3236, 4045, 4696, 5870, 6472, 8090, 11740, 16180, 23480, 32360, 474883, 949766, 1899532, 2374415, 3799064, 4748830, 9497660, 18995320]

約数ペア:

[(1, 18995320), (2, 9497660), (4, 4748830), (5, 3799064), (8, 2374415), (10, 1899532), (20, 949766), (40, 474883), (587, 32360), (809, 23480), (1174, 16180), (1618, 11740), (2348, 8090), (2935, 6472), (3236, 5870), (4045, 4696)]