19967872

素因数分解:

$2^7\times {\mathrm{257}}^1\times {\mathrm{607}}^1$

素因数の和:878

約数の個数: 32

約数和(自身を含む): 40000320

約数和(自身を除く): 20032448

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 257, 514, 607, 1028, 1214, 2056, 2428, 4112, 4856, 8224, 9712, 16448, 19424, 32896, 38848, 77696, 155999, 311998, 623996, 1247992, 2495984, 4991968, 9983936, 19967872]

約数ペア:

[(1, 19967872), (2, 9983936), (4, 4991968), (8, 2495984), (16, 1247992), (32, 623996), (64, 311998), (128, 155999), (257, 77696), (514, 38848), (607, 32896), (1028, 19424), (1214, 16448), (2056, 9712), (2428, 8224), (4112, 4856)]