19489960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1481}}^1$

素因数の和:1546

約数の個数: 64

約数和(自身を含む): 51217920

約数和(自身を除く): 31727960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 56, 70, 94, 140, 188, 235, 280, 329, 376, 470, 658, 940, 1316, 1481, 1645, 1880, 2632, 2962, 3290, 5924, 6580, 7405, 10367, 11848, 13160, 14810, 20734, 29620, 41468, 51835, 59240, 69607, 82936, 103670, 139214, 207340, 278428, 348035, 414680, 487249, 556856, 696070, 974498, 1392140, 1948996, 2436245, 2784280, 3897992, 4872490, 9744980, 19489960]

約数ペア:

[(1, 19489960), (2, 9744980), (4, 4872490), (5, 3897992), (7, 2784280), (8, 2436245), (10, 1948996), (14, 1392140), (20, 974498), (28, 696070), (35, 556856), (40, 487249), (47, 414680), (56, 348035), (70, 278428), (94, 207340), (140, 139214), (188, 103670), (235, 82936), (280, 69607), (329, 59240), (376, 51835), (470, 41468), (658, 29620), (940, 20734), (1316, 14810), (1481, 13160), (1645, 11848), (1880, 10367), (2632, 7405), (2962, 6580), (3290, 5924)]