209421100

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{541}}^1$

素因数の和:648

約数の個数: 108

約数和(自身を含む): 536319840

約数和(自身を除く): 326898740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 79, 98, 100, 140, 158, 175, 196, 245, 316, 350, 395, 490, 541, 553, 700, 790, 980, 1082, 1106, 1225, 1580, 1975, 2164, 2212, 2450, 2705, 2765, 3787, 3871, 3950, 4900, 5410, 5530, 7574, 7742, 7900, 10820, 11060, 13525, 13825, 15148, 15484, 18935, 19355, 26509, 27050, 27650, 37870, 38710, 42739, 53018, 54100, 55300, 75740, 77420, 85478, 94675, 96775, 106036, 132545, 170956, 189350, 193550, 213695, 265090, 299173, 378700, 387100, 427390, 530180, 598346, 662725, 854780, 1068475, 1196692, 1325450, 1495865, 2094211, 2136950, 2650900, 2991730, 4188422, 4273900, 5983460, 7479325, 8376844, 10471055, 14958650, 20942110, 29917300, 41884220, 52355275, 104710550, 209421100]

約数ペア:

[(1, 209421100), (2, 104710550), (4, 52355275), (5, 41884220), (7, 29917300), (10, 20942110), (14, 14958650), (20, 10471055), (25, 8376844), (28, 7479325), (35, 5983460), (49, 4273900), (50, 4188422), (70, 2991730), (79, 2650900), (98, 2136950), (100, 2094211), (140, 1495865), (158, 1325450), (175, 1196692), (196, 1068475), (245, 854780), (316, 662725), (350, 598346), (395, 530180), (490, 427390), (541, 387100), (553, 378700), (700, 299173), (790, 265090), (980, 213695), (1082, 193550), (1106, 189350), (1225, 170956), (1580, 132545), (1975, 106036), (2164, 96775), (2212, 94675), (2450, 85478), (2705, 77420), (2765, 75740), (3787, 55300), (3871, 54100), (3950, 53018), (4900, 42739), (5410, 38710), (5530, 37870), (7574, 27650), (7742, 27050), (7900, 26509), (10820, 19355), (11060, 18935), (13525, 15484), (13825, 15148)]