28185759

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 51609600

約数和(自身を除く): 23423841

約数列:

[1, 3, 7, 9, 19, 21, 27, 47, 57, 63, 133, 141, 167, 171, 189, 329, 399, 423, 501, 513, 893, 987, 1169, 1197, 1269, 1503, 2679, 2961, 3173, 3507, 3591, 4509, 6251, 7849, 8037, 8883, 9519, 10521, 18753, 22211, 23547, 24111, 28557, 31563, 54943, 56259, 66633, 70641, 85671, 149131, 164829, 168777, 199899, 211923, 447393, 494487, 599697, 1043917, 1342179, 1483461, 3131751, 4026537, 9395253, 28185759]

約数ペア:

[(1, 28185759), (3, 9395253), (7, 4026537), (9, 3131751), (19, 1483461), (21, 1342179), (27, 1043917), (47, 599697), (57, 494487), (63, 447393), (133, 211923), (141, 199899), (167, 168777), (171, 164829), (189, 149131), (329, 85671), (399, 70641), (423, 66633), (501, 56259), (513, 54943), (893, 31563), (987, 28557), (1169, 24111), (1197, 23547), (1269, 22211), (1503, 18753), (2679, 10521), (2961, 9519), (3173, 8883), (3507, 8037), (3591, 7849), (4509, 6251)]