401818880

素因数分解:

$2^8\times 5^1\times {\mathrm{313921}}^1$

素因数の和:313942

約数の個数: 36

約数和(自身を含む): 962484852

約数和(自身を除く): 560665972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 313921, 627842, 1255684, 1569605, 2511368, 3139210, 5022736, 6278420, 10045472, 12556840, 20090944, 25113680, 40181888, 50227360, 80363776, 100454720, 200909440, 401818880]

約数ペア:

[(1, 401818880), (2, 200909440), (4, 100454720), (5, 80363776), (8, 50227360), (10, 40181888), (16, 25113680), (20, 20090944), (32, 12556840), (40, 10045472), (64, 6278420), (80, 5022736), (128, 3139210), (160, 2511368), (256, 1569605), (320, 1255684), (640, 627842), (1280, 313921)]