19646260

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{191}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 42900480

約数和(自身を除く): 23254220

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 139, 148, 185, 191, 278, 370, 382, 556, 695, 740, 764, 955, 1390, 1910, 2780, 3820, 5143, 7067, 10286, 14134, 20572, 25715, 26549, 28268, 35335, 51430, 53098, 70670, 102860, 106196, 132745, 141340, 265490, 530980, 982313, 1964626, 3929252, 4911565, 9823130, 19646260]

約数ペア:

[(1, 19646260), (2, 9823130), (4, 4911565), (5, 3929252), (10, 1964626), (20, 982313), (37, 530980), (74, 265490), (139, 141340), (148, 132745), (185, 106196), (191, 102860), (278, 70670), (370, 53098), (382, 51430), (556, 35335), (695, 28268), (740, 26549), (764, 25715), (955, 20572), (1390, 14134), (1910, 10286), (2780, 7067), (3820, 5143)]