7259980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3989}}^1$

素因数の和:4018

約数の個数: 48

約数和(自身を含む): 18768960

約数和(自身を除く): 11508980

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 3989, 7978, 15956, 19945, 27923, 39890, 51857, 55846, 79780, 103714, 111692, 139615, 207428, 259285, 279230, 362999, 518570, 558460, 725998, 1037140, 1451996, 1814995, 3629990, 7259980]

約数ペア:

[(1, 7259980), (2, 3629990), (4, 1814995), (5, 1451996), (7, 1037140), (10, 725998), (13, 558460), (14, 518570), (20, 362999), (26, 279230), (28, 259285), (35, 207428), (52, 139615), (65, 111692), (70, 103714), (91, 79780), (130, 55846), (140, 51857), (182, 39890), (260, 27923), (364, 19945), (455, 15956), (910, 7978), (1820, 3989)]