80707900

素因数分解:

$2^2\times 5^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{181}}^1$

素因数の和:229

約数の個数: 144

約数和(自身を含む): 221166400

約数和(自身を除く): 140458500

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 49, 50, 52, 65, 70, 91, 98, 100, 130, 140, 175, 181, 182, 196, 245, 260, 325, 343, 350, 362, 364, 455, 490, 637, 650, 686, 700, 724, 905, 910, 980, 1225, 1267, 1274, 1300, 1372, 1715, 1810, 1820, 2275, 2353, 2450, 2534, 2548, 3185, 3430, 3620, 4459, 4525, 4550, 4706, 4900, 5068, 6335, 6370, 6860, 8575, 8869, 8918, 9050, 9100, 9412, 11765, 12670, 12740, 15925, 16471, 17150, 17738, 17836, 18100, 22295, 23530, 25340, 31675, 31850, 32942, 34300, 35476, 44345, 44590, 47060, 58825, 62083, 63350, 63700, 65884, 82355, 88690, 89180, 111475, 115297, 117650, 124166, 126700, 164710, 177380, 221725, 222950, 230594, 235300, 248332, 310415, 329420, 411775, 443450, 445900, 461188, 576485, 620830, 807079, 823550, 886900, 1152970, 1241660, 1552075, 1614158, 1647100, 2305940, 2882425, 3104150, 3228316, 4035395, 5764850, 6208300, 8070790, 11529700, 16141580, 20176975, 40353950, 80707900]

約数ペア:

[(1, 80707900), (2, 40353950), (4, 20176975), (5, 16141580), (7, 11529700), (10, 8070790), (13, 6208300), (14, 5764850), (20, 4035395), (25, 3228316), (26, 3104150), (28, 2882425), (35, 2305940), (49, 1647100), (50, 1614158), (52, 1552075), (65, 1241660), (70, 1152970), (91, 886900), (98, 823550), (100, 807079), (130, 620830), (140, 576485), (175, 461188), (181, 445900), (182, 443450), (196, 411775), (245, 329420), (260, 310415), (325, 248332), (343, 235300), (350, 230594), (362, 222950), (364, 221725), (455, 177380), (490, 164710), (637, 126700), (650, 124166), (686, 117650), (700, 115297), (724, 111475), (905, 89180), (910, 88690), (980, 82355), (1225, 65884), (1267, 63700), (1274, 63350), (1300, 62083), (1372, 58825), (1715, 47060), (1810, 44590), (1820, 44345), (2275, 35476), (2353, 34300), (2450, 32942), (2534, 31850), (2548, 31675), (3185, 25340), (3430, 23530), (3620, 22295), (4459, 18100), (4525, 17836), (4550, 17738), (4706, 17150), (4900, 16471), (5068, 15925), (6335, 12740), (6370, 12670), (6860, 11765), (8575, 9412), (8869, 9100), (8918, 9050)]