18798525

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:155

約数の個数: 72

約数和(自身を含む): 36173280

約数和(自身を除く): 17374755

約数列:

[1, 3, 5, 9, 15, 25, 29, 43, 45, 67, 75, 87, 129, 145, 201, 215, 225, 261, 335, 387, 435, 603, 645, 725, 1005, 1075, 1247, 1305, 1675, 1935, 1943, 2175, 2881, 3015, 3225, 3741, 5025, 5829, 6235, 6525, 8643, 9675, 9715, 11223, 14405, 15075, 17487, 18705, 25929, 29145, 31175, 43215, 48575, 56115, 72025, 83549, 87435, 93525, 129645, 145725, 216075, 250647, 280575, 417745, 437175, 648225, 751941, 1253235, 2088725, 3759705, 6266175, 18798525]

約数ペア:

[(1, 18798525), (3, 6266175), (5, 3759705), (9, 2088725), (15, 1253235), (25, 751941), (29, 648225), (43, 437175), (45, 417745), (67, 280575), (75, 250647), (87, 216075), (129, 145725), (145, 129645), (201, 93525), (215, 87435), (225, 83549), (261, 72025), (335, 56115), (387, 48575), (435, 43215), (603, 31175), (645, 29145), (725, 25929), (1005, 18705), (1075, 17487), (1247, 15075), (1305, 14405), (1675, 11223), (1935, 9715), (1943, 9675), (2175, 8643), (2881, 6525), (3015, 6235), (3225, 5829), (3741, 5025)]