128754920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{19993}}^1$

素因数の和:20034

約数の個数: 64

約数和(自身を含む): 345496320

約数和(自身を除く): 216741400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 6440, 19993, 39986, 79972, 99965, 139951, 159944, 199930, 279902, 399860, 459839, 559804, 699755, 799720, 919678, 1119608, 1399510, 1839356, 2299195, 2799020, 3218873, 3678712, 4598390, 5598040, 6437746, 9196780, 12875492, 16094365, 18393560, 25750984, 32188730, 64377460, 128754920]

約数ペア:

[(1, 128754920), (2, 64377460), (4, 32188730), (5, 25750984), (7, 18393560), (8, 16094365), (10, 12875492), (14, 9196780), (20, 6437746), (23, 5598040), (28, 4598390), (35, 3678712), (40, 3218873), (46, 2799020), (56, 2299195), (70, 1839356), (92, 1399510), (115, 1119608), (140, 919678), (161, 799720), (184, 699755), (230, 559804), (280, 459839), (322, 399860), (460, 279902), (644, 199930), (805, 159944), (920, 139951), (1288, 99965), (1610, 79972), (3220, 39986), (6440, 19993)]