209005720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:270

約数の個数: 192

約数和(自身を含む): 612864000

約数和(自身を除く): 403858280

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 31, 35, 40, 44, 55, 56, 62, 70, 77, 88, 110, 121, 124, 140, 154, 155, 199, 217, 220, 242, 248, 280, 308, 310, 341, 385, 398, 434, 440, 484, 605, 616, 620, 682, 770, 796, 847, 868, 968, 995, 1085, 1210, 1240, 1364, 1393, 1540, 1592, 1694, 1705, 1736, 1990, 2170, 2189, 2387, 2420, 2728, 2786, 3080, 3388, 3410, 3751, 3980, 4235, 4340, 4378, 4774, 4840, 5572, 6169, 6776, 6820, 6965, 7502, 7960, 8470, 8680, 8756, 9548, 10945, 11144, 11935, 12338, 13640, 13930, 15004, 15323, 16940, 17512, 18755, 19096, 21890, 23870, 24079, 24676, 26257, 27860, 30008, 30646, 30845, 33880, 37510, 43183, 43780, 47740, 48158, 49352, 52514, 55720, 61292, 61690, 67859, 75020, 76615, 86366, 87560, 95480, 96316, 105028, 120395, 122584, 123380, 131285, 135718, 150040, 153230, 168553, 172732, 192632, 210056, 215915, 240790, 246760, 262570, 271436, 306460, 337106, 339295, 345464, 431830, 475013, 481580, 525140, 542872, 612920, 674212, 678590, 746449, 842765, 863660, 950026, 963160, 1050280, 1348424, 1357180, 1492898, 1685530, 1727320, 1900052, 2375065, 2714360, 2985796, 3371060, 3732245, 3800104, 4750130, 5225143, 5971592, 6742120, 7464490, 9500260, 10450286, 14928980, 19000520, 20900572, 26125715, 29857960, 41801144, 52251430, 104502860, 209005720]

約数ペア:

[(1, 209005720), (2, 104502860), (4, 52251430), (5, 41801144), (7, 29857960), (8, 26125715), (10, 20900572), (11, 19000520), (14, 14928980), (20, 10450286), (22, 9500260), (28, 7464490), (31, 6742120), (35, 5971592), (40, 5225143), (44, 4750130), (55, 3800104), (56, 3732245), (62, 3371060), (70, 2985796), (77, 2714360), (88, 2375065), (110, 1900052), (121, 1727320), (124, 1685530), (140, 1492898), (154, 1357180), (155, 1348424), (199, 1050280), (217, 963160), (220, 950026), (242, 863660), (248, 842765), (280, 746449), (308, 678590), (310, 674212), (341, 612920), (385, 542872), (398, 525140), (434, 481580), (440, 475013), (484, 431830), (605, 345464), (616, 339295), (620, 337106), (682, 306460), (770, 271436), (796, 262570), (847, 246760), (868, 240790), (968, 215915), (995, 210056), (1085, 192632), (1210, 172732), (1240, 168553), (1364, 153230), (1393, 150040), (1540, 135718), (1592, 131285), (1694, 123380), (1705, 122584), (1736, 120395), (1990, 105028), (2170, 96316), (2189, 95480), (2387, 87560), (2420, 86366), (2728, 76615), (2786, 75020), (3080, 67859), (3388, 61690), (3410, 61292), (3751, 55720), (3980, 52514), (4235, 49352), (4340, 48158), (4378, 47740), (4774, 43780), (4840, 43183), (5572, 37510), (6169, 33880), (6776, 30845), (6820, 30646), (6965, 30008), (7502, 27860), (7960, 26257), (8470, 24676), (8680, 24079), (8756, 23870), (9548, 21890), (10945, 19096), (11144, 18755), (11935, 17512), (12338, 16940), (13640, 15323), (13930, 15004)]