19857760

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9547}}^1$

素因数の和:9575

約数の個数: 48

約数和(自身を含む): 50528016

約数和(自身を除く): 30670256

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9547, 19094, 38188, 47735, 76376, 95470, 124111, 152752, 190940, 248222, 305504, 381880, 496444, 620555, 763760, 992888, 1241110, 1527520, 1985776, 2482220, 3971552, 4964440, 9928880, 19857760]

約数ペア:

[(1, 19857760), (2, 9928880), (4, 4964440), (5, 3971552), (8, 2482220), (10, 1985776), (13, 1527520), (16, 1241110), (20, 992888), (26, 763760), (32, 620555), (40, 496444), (52, 381880), (65, 305504), (80, 248222), (104, 190940), (130, 152752), (160, 124111), (208, 95470), (260, 76376), (416, 47735), (520, 38188), (1040, 19094), (2080, 9547)]