81565260

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{194203}}^1$

素因数の和:194222

約数の個数: 48

約数和(自身を含む): 261010176

約数和(自身を除く): 179444916

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, 194203, 388406, 582609, 776812, 971015, 1165218, 1359421, 1942030, 2330436, 2718842, 2913045, 3884060, 4078263, 5437684, 5826090, 6797105, 8156526, 11652180, 13594210, 16313052, 20391315, 27188420, 40782630, 81565260]

約数ペア:

[(1, 81565260), (2, 40782630), (3, 27188420), (4, 20391315), (5, 16313052), (6, 13594210), (7, 11652180), (10, 8156526), (12, 6797105), (14, 5826090), (15, 5437684), (20, 4078263), (21, 3884060), (28, 2913045), (30, 2718842), (35, 2330436), (42, 1942030), (60, 1359421), (70, 1165218), (84, 971015), (105, 776812), (140, 582609), (210, 388406), (420, 194203)]