201800080

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{81371}}^1$

素因数の和:81415

約数の個数: 40

約数和(自身を含む): 484326144

約数和(自身を除く): 282526064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 81371, 162742, 325484, 406855, 650968, 813710, 1301936, 1627420, 2522501, 3254840, 5045002, 6509680, 10090004, 12612505, 20180008, 25225010, 40360016, 50450020, 100900040, 201800080]

約数ペア:

[(1, 201800080), (2, 100900040), (4, 50450020), (5, 40360016), (8, 25225010), (10, 20180008), (16, 12612505), (20, 10090004), (31, 6509680), (40, 5045002), (62, 3254840), (80, 2522501), (124, 1627420), (155, 1301936), (248, 813710), (310, 650968), (496, 406855), (620, 325484), (1240, 162742), (2480, 81371)]