251685

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1$

素因数の和:82

約数の個数: 48

約数和(自身を含む): 539136

約数和(自身を除く): 287451

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 47, 51, 63, 85, 105, 119, 141, 153, 235, 255, 315, 329, 357, 423, 595, 705, 765, 799, 987, 1071, 1645, 1785, 2115, 2397, 2961, 3995, 4935, 5355, 5593, 7191, 11985, 14805, 16779, 27965, 35955, 50337, 83895, 251685]

約数ペア:

[(1, 251685), (3, 83895), (5, 50337), (7, 35955), (9, 27965), (15, 16779), (17, 14805), (21, 11985), (35, 7191), (45, 5593), (47, 5355), (51, 4935), (63, 3995), (85, 2961), (105, 2397), (119, 2115), (141, 1785), (153, 1645), (235, 1071), (255, 987), (315, 799), (329, 765), (357, 705), (423, 595)]