28208635

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{251}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 44271360

約数和(自身を除く): 16062725

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 169, 247, 251, 455, 665, 845, 1183, 1235, 1255, 1729, 1757, 3211, 3263, 4769, 5915, 8645, 8785, 16055, 16315, 22477, 22841, 23845, 33383, 42419, 61997, 112385, 114205, 166915, 212095, 296933, 309985, 433979, 805961, 1484665, 2169895, 4029805, 5641727, 28208635]

約数ペア:

[(1, 28208635), (5, 5641727), (7, 4029805), (13, 2169895), (19, 1484665), (35, 805961), (65, 433979), (91, 309985), (95, 296933), (133, 212095), (169, 166915), (247, 114205), (251, 112385), (455, 61997), (665, 42419), (845, 33383), (1183, 23845), (1235, 22841), (1255, 22477), (1729, 16315), (1757, 16055), (3211, 8785), (3263, 8645), (4769, 5915)]