64451480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{51977}}^1$

素因数の和:52019

約数の個数: 32

約数和(自身を含む): 149696640

約数和(自身を除く): 85245160

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 51977, 103954, 207908, 259885, 415816, 519770, 1039540, 1611287, 2079080, 3222574, 6445148, 8056435, 12890296, 16112870, 32225740, 64451480]

約数ペア:

[(1, 64451480), (2, 32225740), (4, 16112870), (5, 12890296), (8, 8056435), (10, 6445148), (20, 3222574), (31, 2079080), (40, 1611287), (62, 1039540), (124, 519770), (155, 415816), (248, 259885), (310, 207908), (620, 103954), (1240, 51977)]