161798720

素因数分解:

$2^6\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1201}}^1$

素因数の和:1639

約数の個数: 56

約数和(自身を含む): 386519928

約数和(自身を除く): 224721208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 421, 842, 1201, 1684, 2105, 2402, 3368, 4210, 4804, 6005, 6736, 8420, 9608, 12010, 13472, 16840, 19216, 24020, 26944, 33680, 38432, 48040, 67360, 76864, 96080, 134720, 192160, 384320, 505621, 1011242, 2022484, 2528105, 4044968, 5056210, 8089936, 10112420, 16179872, 20224840, 32359744, 40449680, 80899360, 161798720]

約数ペア:

[(1, 161798720), (2, 80899360), (4, 40449680), (5, 32359744), (8, 20224840), (10, 16179872), (16, 10112420), (20, 8089936), (32, 5056210), (40, 4044968), (64, 2528105), (80, 2022484), (160, 1011242), (320, 505621), (421, 384320), (842, 192160), (1201, 134720), (1684, 96080), (2105, 76864), (2402, 67360), (3368, 48040), (4210, 38432), (4804, 33680), (6005, 26944), (6736, 24020), (8420, 19216), (9608, 16840), (12010, 13472)]