28873840

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{8803}}^1$

素因数の和:8857

約数の個数: 40

約数和(自身を含む): 68776848

約数和(自身を除く): 39903008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 8803, 17606, 35212, 44015, 70424, 88030, 140848, 176060, 352120, 360923, 704240, 721846, 1443692, 1804615, 2887384, 3609230, 5774768, 7218460, 14436920, 28873840]

約数ペア:

[(1, 28873840), (2, 14436920), (4, 7218460), (5, 5774768), (8, 3609230), (10, 2887384), (16, 1804615), (20, 1443692), (40, 721846), (41, 704240), (80, 360923), (82, 352120), (164, 176060), (205, 140848), (328, 88030), (410, 70424), (656, 44015), (820, 35212), (1640, 17606), (3280, 8803)]