21702540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{21277}}^1$

素因数の和:21306

約数の個数: 48

約数和(自身を含む): 64344672

約数和(自身を除く): 42642132

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 21277, 42554, 63831, 85108, 106385, 127662, 212770, 255324, 319155, 361709, 425540, 638310, 723418, 1085127, 1276620, 1446836, 1808545, 2170254, 3617090, 4340508, 5425635, 7234180, 10851270, 21702540]

約数ペア:

[(1, 21702540), (2, 10851270), (3, 7234180), (4, 5425635), (5, 4340508), (6, 3617090), (10, 2170254), (12, 1808545), (15, 1446836), (17, 1276620), (20, 1085127), (30, 723418), (34, 638310), (51, 425540), (60, 361709), (68, 319155), (85, 255324), (102, 212770), (170, 127662), (204, 106385), (255, 85108), (340, 63831), (510, 42554), (1020, 21277)]