168395720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{977}}^1$

素因数の和:1158

約数の個数: 64

約数和(自身を含む): 394329600

約数和(自身を除く): 225933880

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 139, 155, 248, 278, 310, 556, 620, 695, 977, 1112, 1240, 1390, 1954, 2780, 3908, 4309, 4885, 5560, 7816, 8618, 9770, 17236, 19540, 21545, 30287, 34472, 39080, 43090, 60574, 86180, 121148, 135803, 151435, 172360, 242296, 271606, 302870, 543212, 605740, 679015, 1086424, 1211480, 1358030, 2716060, 4209893, 5432120, 8419786, 16839572, 21049465, 33679144, 42098930, 84197860, 168395720]

約数ペア:

[(1, 168395720), (2, 84197860), (4, 42098930), (5, 33679144), (8, 21049465), (10, 16839572), (20, 8419786), (31, 5432120), (40, 4209893), (62, 2716060), (124, 1358030), (139, 1211480), (155, 1086424), (248, 679015), (278, 605740), (310, 543212), (556, 302870), (620, 271606), (695, 242296), (977, 172360), (1112, 151435), (1240, 135803), (1390, 121148), (1954, 86180), (2780, 60574), (3908, 43090), (4309, 39080), (4885, 34472), (5560, 30287), (7816, 21545), (8618, 19540), (9770, 17236)]