138400840

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{41687}}^1$

素因数の和:41781

約数の個数: 32

約数和(自身を含む): 315161280

約数和(自身を除く): 176760440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 41687, 83374, 166748, 208435, 333496, 416870, 833740, 1667480, 3460021, 6920042, 13840084, 17300105, 27680168, 34600210, 69200420, 138400840]

約数ペア:

[(1, 138400840), (2, 69200420), (4, 34600210), (5, 27680168), (8, 17300105), (10, 13840084), (20, 6920042), (40, 3460021), (83, 1667480), (166, 833740), (332, 416870), (415, 333496), (664, 208435), (830, 166748), (1660, 83374), (3320, 41687)]