18321225

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:111

約数の個数: 96

約数和(自身を含む): 36664320

約数和(自身を除く): 18343095

約数列:

[1, 3, 5, 13, 15, 19, 23, 25, 39, 43, 57, 65, 69, 75, 95, 115, 129, 195, 215, 247, 285, 299, 325, 345, 437, 475, 559, 575, 645, 741, 817, 897, 975, 989, 1075, 1235, 1311, 1425, 1495, 1677, 1725, 2185, 2451, 2795, 2967, 3225, 3705, 4085, 4485, 4945, 5681, 6175, 6555, 7475, 8385, 10621, 10925, 12255, 12857, 13975, 14835, 17043, 18525, 18791, 20425, 22425, 24725, 28405, 31863, 32775, 38571, 41925, 53105, 56373, 61275, 64285, 74175, 85215, 93955, 142025, 159315, 192855, 244283, 265525, 281865, 321425, 426075, 469775, 732849, 796575, 964275, 1221415, 1409325, 3664245, 6107075, 18321225]

約数ペア:

[(1, 18321225), (3, 6107075), (5, 3664245), (13, 1409325), (15, 1221415), (19, 964275), (23, 796575), (25, 732849), (39, 469775), (43, 426075), (57, 321425), (65, 281865), (69, 265525), (75, 244283), (95, 192855), (115, 159315), (129, 142025), (195, 93955), (215, 85215), (247, 74175), (285, 64285), (299, 61275), (325, 56373), (345, 53105), (437, 41925), (475, 38571), (559, 32775), (575, 31863), (645, 28405), (741, 24725), (817, 22425), (897, 20425), (975, 18791), (989, 18525), (1075, 17043), (1235, 14835), (1311, 13975), (1425, 12857), (1495, 12255), (1677, 10925), (1725, 10621), (2185, 8385), (2451, 7475), (2795, 6555), (2967, 6175), (3225, 5681), (3705, 4945), (4085, 4485)]