18194820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{43321}}^1$

素因数の和:43340

約数の個数: 48

約数和(自身を含む): 58224768

約数和(自身を除く): 40029948

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 43321, 86642, 129963, 173284, 216605, 259926, 303247, 433210, 519852, 606494, 649815, 866420, 909741, 1212988, 1299630, 1516235, 1819482, 2599260, 3032470, 3638964, 4548705, 6064940, 9097410, 18194820]

約数ペア:

[(1, 18194820), (2, 9097410), (3, 6064940), (4, 4548705), (5, 3638964), (6, 3032470), (7, 2599260), (10, 1819482), (12, 1516235), (14, 1299630), (15, 1212988), (20, 909741), (21, 866420), (28, 649815), (30, 606494), (35, 519852), (42, 433210), (60, 303247), (70, 259926), (84, 216605), (105, 173284), (140, 129963), (210, 86642), (420, 43321)]