20955540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4421}}^1$

素因数の和:4512

約数の個数: 48

約数和(自身を含む): 59431680

約数和(自身を除く): 38476140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 79, 158, 237, 316, 395, 474, 790, 948, 1185, 1580, 2370, 4421, 4740, 8842, 13263, 17684, 22105, 26526, 44210, 53052, 66315, 88420, 132630, 265260, 349259, 698518, 1047777, 1397036, 1746295, 2095554, 3492590, 4191108, 5238885, 6985180, 10477770, 20955540]

約数ペア:

[(1, 20955540), (2, 10477770), (3, 6985180), (4, 5238885), (5, 4191108), (6, 3492590), (10, 2095554), (12, 1746295), (15, 1397036), (20, 1047777), (30, 698518), (60, 349259), (79, 265260), (158, 132630), (237, 88420), (316, 66315), (395, 53052), (474, 44210), (790, 26526), (948, 22105), (1185, 17684), (1580, 13263), (2370, 8842), (4421, 4740)]