19678540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{367}}^1\times {\mathrm{383}}^1$

素因数の和:766

約数の個数: 48

約数和(自身を含む): 47480832

約数和(自身を除く): 27802292

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 367, 383, 734, 766, 1468, 1532, 1835, 1915, 2569, 2681, 3670, 3830, 5138, 5362, 7340, 7660, 10276, 10724, 12845, 13405, 25690, 26810, 51380, 53620, 140561, 281122, 562244, 702805, 983927, 1405610, 1967854, 2811220, 3935708, 4919635, 9839270, 19678540]

約数ペア:

[(1, 19678540), (2, 9839270), (4, 4919635), (5, 3935708), (7, 2811220), (10, 1967854), (14, 1405610), (20, 983927), (28, 702805), (35, 562244), (70, 281122), (140, 140561), (367, 53620), (383, 51380), (734, 26810), (766, 25690), (1468, 13405), (1532, 12845), (1835, 10724), (1915, 10276), (2569, 7660), (2681, 7340), (3670, 5362), (3830, 5138)]