81117760

素因数分解:

$2^6\times 5^1\times {\mathrm{253493}}^1$

素因数の和:253510

約数の個数: 28

約数和(自身を含む): 193162428

約数和(自身を除く): 112044668

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 253493, 506986, 1013972, 1267465, 2027944, 2534930, 4055888, 5069860, 8111776, 10139720, 16223552, 20279440, 40558880, 81117760]

約数ペア:

[(1, 81117760), (2, 40558880), (4, 20279440), (5, 16223552), (8, 10139720), (10, 8111776), (16, 5069860), (20, 4055888), (32, 2534930), (40, 2027944), (64, 1267465), (80, 1013972), (160, 506986), (320, 253493)]