263808640

素因数分解:

$2^7\times 5^1\times {\mathrm{412201}}^1$

素因数の和:412220

約数の個数: 32

約数和(自身を含む): 630669060

約数和(自身を除く): 366860420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 412201, 824402, 1648804, 2061005, 3297608, 4122010, 6595216, 8244020, 13190432, 16488040, 26380864, 32976080, 52761728, 65952160, 131904320, 263808640]

約数ペア:

[(1, 263808640), (2, 131904320), (4, 65952160), (5, 52761728), (8, 32976080), (10, 26380864), (16, 16488040), (20, 13190432), (32, 8244020), (40, 6595216), (64, 4122010), (80, 3297608), (128, 2061005), (160, 1648804), (320, 824402), (640, 412201)]