16998975

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:317

約数の個数: 72

約数和(自身を含む): 35747712

約数和(自身を除く): 18748737

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 43, 45, 63, 75, 105, 129, 175, 215, 225, 251, 301, 315, 387, 525, 645, 753, 903, 1075, 1255, 1505, 1575, 1757, 1935, 2259, 2709, 3225, 3765, 4515, 5271, 6275, 7525, 8785, 9675, 10793, 11295, 13545, 15813, 18825, 22575, 26355, 32379, 43925, 53965, 56475, 67725, 75551, 79065, 97137, 131775, 161895, 226653, 269825, 377755, 395325, 485685, 679959, 809475, 1133265, 1888775, 2428425, 3399795, 5666325, 16998975]

約数ペア:

[(1, 16998975), (3, 5666325), (5, 3399795), (7, 2428425), (9, 1888775), (15, 1133265), (21, 809475), (25, 679959), (35, 485685), (43, 395325), (45, 377755), (63, 269825), (75, 226653), (105, 161895), (129, 131775), (175, 97137), (215, 79065), (225, 75551), (251, 67725), (301, 56475), (315, 53965), (387, 43925), (525, 32379), (645, 26355), (753, 22575), (903, 18825), (1075, 15813), (1255, 13545), (1505, 11295), (1575, 10793), (1757, 9675), (1935, 8785), (2259, 7525), (2709, 6275), (3225, 5271), (3765, 4515)]