27426280

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{1999}}^1$

素因数の和:2031

約数の個数: 64

約数和(自身を含む): 72000000

約数和(自身を除く): 44573720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1372, 1715, 1960, 1999, 2744, 3430, 3998, 6860, 7996, 9995, 13720, 13993, 15992, 19990, 27986, 39980, 55972, 69965, 79960, 97951, 111944, 139930, 195902, 279860, 391804, 489755, 559720, 685657, 783608, 979510, 1371314, 1959020, 2742628, 3428285, 3918040, 5485256, 6856570, 13713140, 27426280]

約数ペア:

[(1, 27426280), (2, 13713140), (4, 6856570), (5, 5485256), (7, 3918040), (8, 3428285), (10, 2742628), (14, 1959020), (20, 1371314), (28, 979510), (35, 783608), (40, 685657), (49, 559720), (56, 489755), (70, 391804), (98, 279860), (140, 195902), (196, 139930), (245, 111944), (280, 97951), (343, 79960), (392, 69965), (490, 55972), (686, 39980), (980, 27986), (1372, 19990), (1715, 15992), (1960, 13993), (1999, 13720), (2744, 9995), (3430, 7996), (3998, 6860)]