8209840

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2503}}^1$

素因数の和:2557

約数の個数: 40

約数和(自身を含む): 19561248

約数和(自身を除く): 11351408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 2503, 3280, 5006, 10012, 12515, 20024, 25030, 40048, 50060, 100120, 102623, 200240, 205246, 410492, 513115, 820984, 1026230, 1641968, 2052460, 4104920, 8209840]

約数ペア:

[(1, 8209840), (2, 4104920), (4, 2052460), (5, 1641968), (8, 1026230), (10, 820984), (16, 513115), (20, 410492), (40, 205246), (41, 200240), (80, 102623), (82, 100120), (164, 50060), (205, 40048), (328, 25030), (410, 20024), (656, 12515), (820, 10012), (1640, 5006), (2503, 3280)]