13389440

素因数分解:

$2^7\times 5^1\times {\mathrm{20921}}^1$

素因数の和:20940

約数の個数: 32

約数和(自身を含む): 32010660

約数和(自身を除く): 18621220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 20921, 41842, 83684, 104605, 167368, 209210, 334736, 418420, 669472, 836840, 1338944, 1673680, 2677888, 3347360, 6694720, 13389440]

約数ペア:

[(1, 13389440), (2, 6694720), (4, 3347360), (5, 2677888), (8, 1673680), (10, 1338944), (16, 836840), (20, 669472), (32, 418420), (40, 334736), (64, 209210), (80, 167368), (128, 104605), (160, 83684), (320, 41842), (640, 20921)]