18930320

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5503}}^1$

素因数の和:5559

約数の個数: 40

約数和(自身を含む): 45044736

約数和(自身を除く): 26114416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5503, 11006, 22012, 27515, 44024, 55030, 88048, 110060, 220120, 236629, 440240, 473258, 946516, 1183145, 1893032, 2366290, 3786064, 4732580, 9465160, 18930320]

約数ペア:

[(1, 18930320), (2, 9465160), (4, 4732580), (5, 3786064), (8, 2366290), (10, 1893032), (16, 1183145), (20, 946516), (40, 473258), (43, 440240), (80, 236629), (86, 220120), (172, 110060), (215, 88048), (344, 55030), (430, 44024), (688, 27515), (860, 22012), (1720, 11006), (3440, 5503)]