2806180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 6519744

約数和(自身を除く): 3713564

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 251, 260, 430, 502, 559, 860, 1004, 1118, 1255, 2236, 2510, 2795, 3263, 5020, 5590, 6526, 10793, 11180, 13052, 16315, 21586, 32630, 43172, 53965, 65260, 107930, 140309, 215860, 280618, 561236, 701545, 1403090, 2806180]

約数ペア:

[(1, 2806180), (2, 1403090), (4, 701545), (5, 561236), (10, 280618), (13, 215860), (20, 140309), (26, 107930), (43, 65260), (52, 53965), (65, 43172), (86, 32630), (130, 21586), (172, 16315), (215, 13052), (251, 11180), (260, 10793), (430, 6526), (502, 5590), (559, 5020), (860, 3263), (1004, 2795), (1118, 2510), (1255, 2236)]