21017488

素因数分解:

$2^4\times {\mathrm{617}}^1\times {\mathrm{2129}}^1$

素因数の和:2754

約数の個数: 20

約数和(自身を含む): 40806540

約数和(自身を除く): 19789052

約数列:

[1, 2, 4, 8, 16, 617, 1234, 2129, 2468, 4258, 4936, 8516, 9872, 17032, 34064, 1313593, 2627186, 5254372, 10508744, 21017488]

約数ペア:

[(1, 21017488), (2, 10508744), (4, 5254372), (8, 2627186), (16, 1313593), (617, 34064), (1234, 17032), (2129, 9872), (2468, 8516), (4258, 4936)]