56781400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21839}}^1$

素因数の和:21868

約数の個数: 48

約数和(自身を含む): 142178400

約数和(自身を除く): 85397000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 21839, 43678, 87356, 109195, 174712, 218390, 283907, 436780, 545975, 567814, 873560, 1091950, 1135628, 1419535, 2183900, 2271256, 2839070, 4367800, 5678140, 7097675, 11356280, 14195350, 28390700, 56781400]

約数ペア:

[(1, 56781400), (2, 28390700), (4, 14195350), (5, 11356280), (8, 7097675), (10, 5678140), (13, 4367800), (20, 2839070), (25, 2271256), (26, 2183900), (40, 1419535), (50, 1135628), (52, 1091950), (65, 873560), (100, 567814), (104, 545975), (130, 436780), (200, 283907), (260, 218390), (325, 174712), (520, 109195), (650, 87356), (1300, 43678), (2600, 21839)]