16905320

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2003}}^1$

素因数の和:2225

約数の個数: 32

約数和(自身を含む): 38236320

約数和(自身を除く): 21331000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2003, 2110, 4006, 4220, 8012, 8440, 10015, 16024, 20030, 40060, 80120, 422633, 845266, 1690532, 2113165, 3381064, 4226330, 8452660, 16905320]

約数ペア:

[(1, 16905320), (2, 8452660), (4, 4226330), (5, 3381064), (8, 2113165), (10, 1690532), (20, 845266), (40, 422633), (211, 80120), (422, 40060), (844, 20030), (1055, 16024), (1688, 10015), (2003, 8440), (2110, 8012), (4006, 4220)]