19867685680

素因数分解:

$2^4\times 5^1\times {\mathrm{4001}}^1\times {\mathrm{62071}}^1$

素因数の和:66085

約数の個数: 40

約数和(自身を含む): 46204658784

約数和(自身を除く): 26336973104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4001, 8002, 16004, 20005, 32008, 40010, 62071, 64016, 80020, 124142, 160040, 248284, 310355, 320080, 496568, 620710, 993136, 1241420, 2482840, 4965680, 248346071, 496692142, 993384284, 1241730355, 1986768568, 2483460710, 3973537136, 4966921420, 9933842840, 19867685680]

約数ペア:

[(1, 19867685680), (2, 9933842840), (4, 4966921420), (5, 3973537136), (8, 2483460710), (10, 1986768568), (16, 1241730355), (20, 993384284), (40, 496692142), (80, 248346071), (4001, 4965680), (8002, 2482840), (16004, 1241420), (20005, 993136), (32008, 620710), (40010, 496568), (62071, 320080), (64016, 310355), (80020, 248284), (124142, 160040)]