647580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 1862784

約数和(自身を除く): 1215204

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 251, 258, 430, 502, 516, 645, 753, 860, 1004, 1255, 1290, 1506, 2510, 2580, 3012, 3765, 5020, 7530, 10793, 15060, 21586, 32379, 43172, 53965, 64758, 107930, 129516, 161895, 215860, 323790, 647580]

約数ペア:

[(1, 647580), (2, 323790), (3, 215860), (4, 161895), (5, 129516), (6, 107930), (10, 64758), (12, 53965), (15, 43172), (20, 32379), (30, 21586), (43, 15060), (60, 10793), (86, 7530), (129, 5020), (172, 3765), (215, 3012), (251, 2580), (258, 2510), (430, 1506), (502, 1290), (516, 1255), (645, 1004), (753, 860)]