20721012

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3089}}^1$

素因数の和:3152

約数の個数: 48

約数和(自身を含む): 53296320

約数和(自身を除く): 32575308

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 43, 52, 78, 86, 129, 156, 172, 258, 516, 559, 1118, 1677, 2236, 3089, 3354, 6178, 6708, 9267, 12356, 18534, 37068, 40157, 80314, 120471, 132827, 160628, 240942, 265654, 398481, 481884, 531308, 796962, 1593924, 1726751, 3453502, 5180253, 6907004, 10360506, 20721012]

約数ペア:

[(1, 20721012), (2, 10360506), (3, 6907004), (4, 5180253), (6, 3453502), (12, 1726751), (13, 1593924), (26, 796962), (39, 531308), (43, 481884), (52, 398481), (78, 265654), (86, 240942), (129, 160628), (156, 132827), (172, 120471), (258, 80314), (516, 40157), (559, 37068), (1118, 18534), (1677, 12356), (2236, 9267), (3089, 6708), (3354, 6178)]