19204325

素因数分解:

$5^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:342

約数の個数: 36

約数和(自身を含む): 28264932

約数和(自身を除く): 9060607

約数列:

[1, 5, 7, 25, 35, 49, 61, 175, 245, 257, 305, 427, 1225, 1285, 1525, 1799, 2135, 2989, 6425, 8995, 10675, 12593, 14945, 15677, 44975, 62965, 74725, 78385, 109739, 314825, 391925, 548695, 768173, 2743475, 3840865, 19204325]

約数ペア:

[(1, 19204325), (5, 3840865), (7, 2743475), (25, 768173), (35, 548695), (49, 391925), (61, 314825), (175, 109739), (245, 78385), (257, 74725), (305, 62965), (427, 44975), (1225, 15677), (1285, 14945), (1525, 12593), (1799, 10675), (2135, 8995), (2989, 6425)]