178270820

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{1999}}^1$

素因数の和:2042

約数の個数: 96

約数和(自身を含む): 470400000

約数和(自身を除く): 292129180

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 343, 364, 455, 490, 637, 686, 910, 980, 1274, 1372, 1715, 1820, 1999, 2548, 3185, 3430, 3998, 4459, 6370, 6860, 7996, 8918, 9995, 12740, 13993, 17836, 19990, 22295, 25987, 27986, 39980, 44590, 51974, 55972, 69965, 89180, 97951, 103948, 129935, 139930, 181909, 195902, 259870, 279860, 363818, 391804, 489755, 519740, 685657, 727636, 909545, 979510, 1273363, 1371314, 1819090, 1959020, 2546726, 2742628, 3428285, 3638180, 5093452, 6366815, 6856570, 8913541, 12733630, 13713140, 17827082, 25467260, 35654164, 44567705, 89135410, 178270820]

約数ペア:

[(1, 178270820), (2, 89135410), (4, 44567705), (5, 35654164), (7, 25467260), (10, 17827082), (13, 13713140), (14, 12733630), (20, 8913541), (26, 6856570), (28, 6366815), (35, 5093452), (49, 3638180), (52, 3428285), (65, 2742628), (70, 2546726), (91, 1959020), (98, 1819090), (130, 1371314), (140, 1273363), (182, 979510), (196, 909545), (245, 727636), (260, 685657), (343, 519740), (364, 489755), (455, 391804), (490, 363818), (637, 279860), (686, 259870), (910, 195902), (980, 181909), (1274, 139930), (1372, 129935), (1715, 103948), (1820, 97951), (1999, 89180), (2548, 69965), (3185, 55972), (3430, 51974), (3998, 44590), (4459, 39980), (6370, 27986), (6860, 25987), (7996, 22295), (8918, 19990), (9995, 17836), (12740, 13993)]