28079820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{607}}^1$

素因数の和:879

約数の個数: 72

約数和(自身を含む): 85647744

約数和(自身を除く): 57567924

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 257, 514, 607, 771, 1028, 1214, 1285, 1542, 1821, 2313, 2428, 2570, 3035, 3084, 3642, 3855, 4626, 5140, 5463, 6070, 7284, 7710, 9105, 9252, 10926, 11565, 12140, 15420, 18210, 21852, 23130, 27315, 36420, 46260, 54630, 109260, 155999, 311998, 467997, 623996, 779995, 935994, 1403991, 1559990, 1871988, 2339985, 2807982, 3119980, 4679970, 5615964, 7019955, 9359940, 14039910, 28079820]

約数ペア:

[(1, 28079820), (2, 14039910), (3, 9359940), (4, 7019955), (5, 5615964), (6, 4679970), (9, 3119980), (10, 2807982), (12, 2339985), (15, 1871988), (18, 1559990), (20, 1403991), (30, 935994), (36, 779995), (45, 623996), (60, 467997), (90, 311998), (180, 155999), (257, 109260), (514, 54630), (607, 46260), (771, 36420), (1028, 27315), (1214, 23130), (1285, 21852), (1542, 18210), (1821, 15420), (2313, 12140), (2428, 11565), (2570, 10926), (3035, 9252), (3084, 9105), (3642, 7710), (3855, 7284), (4626, 6070), (5140, 5463)]