19884825

素因数分解:

$3^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:439

約数の個数: 48

約数和(自身を含む): 37051200

約数和(自身を除く): 17166375

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 89, 135, 225, 267, 331, 445, 675, 801, 993, 1335, 1655, 2225, 2403, 2979, 4005, 4965, 6675, 8275, 8937, 12015, 14895, 20025, 24825, 29459, 44685, 60075, 74475, 88377, 147295, 223425, 265131, 441885, 736475, 795393, 1325655, 2209425, 3976965, 6628275, 19884825]

約数ペア:

[(1, 19884825), (3, 6628275), (5, 3976965), (9, 2209425), (15, 1325655), (25, 795393), (27, 736475), (45, 441885), (75, 265131), (89, 223425), (135, 147295), (225, 88377), (267, 74475), (331, 60075), (445, 44685), (675, 29459), (801, 24825), (993, 20025), (1335, 14895), (1655, 12015), (2225, 8937), (2403, 8275), (2979, 6675), (4005, 4965)]