80909440

素因数分解:

$2^7\times 5^1\times {\mathrm{126421}}^1$

素因数の和:126440

約数の個数: 32

約数和(自身を含む): 193425660

約数和(自身を除く): 112516220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 126421, 252842, 505684, 632105, 1011368, 1264210, 2022736, 2528420, 4045472, 5056840, 8090944, 10113680, 16181888, 20227360, 40454720, 80909440]

約数ペア:

[(1, 80909440), (2, 40454720), (4, 20227360), (5, 16181888), (8, 10113680), (10, 8090944), (16, 5056840), (20, 4045472), (32, 2528420), (40, 2022736), (64, 1264210), (80, 1011368), (128, 632105), (160, 505684), (320, 252842), (640, 126421)]