268505680

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{1999}}^1$

素因数の和:2108

約数の個数: 80

約数和(自身を含む): 660672000

約数和(自身を除く): 392166320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 73, 80, 92, 115, 146, 184, 230, 292, 365, 368, 460, 584, 730, 920, 1168, 1460, 1679, 1840, 1999, 2920, 3358, 3998, 5840, 6716, 7996, 8395, 9995, 13432, 15992, 16790, 19990, 26864, 31984, 33580, 39980, 45977, 67160, 79960, 91954, 134320, 145927, 159920, 183908, 229885, 291854, 367816, 459770, 583708, 729635, 735632, 919540, 1167416, 1459270, 1839080, 2334832, 2918540, 3356321, 3678160, 5837080, 6712642, 11674160, 13425284, 16781605, 26850568, 33563210, 53701136, 67126420, 134252840, 268505680]

約数ペア:

[(1, 268505680), (2, 134252840), (4, 67126420), (5, 53701136), (8, 33563210), (10, 26850568), (16, 16781605), (20, 13425284), (23, 11674160), (40, 6712642), (46, 5837080), (73, 3678160), (80, 3356321), (92, 2918540), (115, 2334832), (146, 1839080), (184, 1459270), (230, 1167416), (292, 919540), (365, 735632), (368, 729635), (460, 583708), (584, 459770), (730, 367816), (920, 291854), (1168, 229885), (1460, 183908), (1679, 159920), (1840, 145927), (1999, 134320), (2920, 91954), (3358, 79960), (3998, 67160), (5840, 45977), (6716, 39980), (7996, 33580), (8395, 31984), (9995, 26864), (13432, 19990), (15992, 16790)]