19309180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:211

約数の個数: 72

約数和(自身を含む): 45581760

約数和(自身を除く): 26272580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 101, 110, 121, 158, 202, 220, 242, 316, 395, 404, 484, 505, 605, 790, 869, 1010, 1111, 1210, 1580, 1738, 2020, 2222, 2420, 3476, 4345, 4444, 5555, 7979, 8690, 9559, 11110, 12221, 15958, 17380, 19118, 22220, 24442, 31916, 38236, 39895, 47795, 48884, 61105, 79790, 87769, 95590, 122210, 159580, 175538, 191180, 244420, 351076, 438845, 877690, 965459, 1755380, 1930918, 3861836, 4827295, 9654590, 19309180]

約数ペア:

[(1, 19309180), (2, 9654590), (4, 4827295), (5, 3861836), (10, 1930918), (11, 1755380), (20, 965459), (22, 877690), (44, 438845), (55, 351076), (79, 244420), (101, 191180), (110, 175538), (121, 159580), (158, 122210), (202, 95590), (220, 87769), (242, 79790), (316, 61105), (395, 48884), (404, 47795), (484, 39895), (505, 38236), (605, 31916), (790, 24442), (869, 22220), (1010, 19118), (1111, 17380), (1210, 15958), (1580, 12221), (1738, 11110), (2020, 9559), (2222, 8690), (2420, 7979), (3476, 5555), (4345, 4444)]