18004240

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{3359}}^1$

素因数の和:3439

約数の個数: 40

約数和(自身を含む): 42497280

約数和(自身を除く): 24493040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 3359, 5360, 6718, 13436, 16795, 26872, 33590, 53744, 67180, 134360, 225053, 268720, 450106, 900212, 1125265, 1800424, 2250530, 3600848, 4501060, 9002120, 18004240]

約数ペア:

[(1, 18004240), (2, 9002120), (4, 4501060), (5, 3600848), (8, 2250530), (10, 1800424), (16, 1125265), (20, 900212), (40, 450106), (67, 268720), (80, 225053), (134, 134360), (268, 67180), (335, 53744), (536, 33590), (670, 26872), (1072, 16795), (1340, 13436), (2680, 6718), (3359, 5360)]