206979920

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{397}}^1$

素因数の和:450

約数の個数: 160

約数和(自身を含む): 592224000

約数和(自身を除く): 385244080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 80, 95, 98, 112, 133, 140, 152, 190, 196, 245, 266, 280, 304, 343, 380, 392, 397, 490, 532, 560, 665, 686, 760, 784, 794, 931, 980, 1064, 1330, 1372, 1520, 1588, 1715, 1862, 1960, 1985, 2128, 2660, 2744, 2779, 3176, 3430, 3724, 3920, 3970, 4655, 5320, 5488, 5558, 6352, 6517, 6860, 7448, 7543, 7940, 9310, 10640, 11116, 13034, 13720, 13895, 14896, 15086, 15880, 18620, 19453, 22232, 26068, 27440, 27790, 30172, 31760, 32585, 37240, 37715, 38906, 44464, 52136, 52801, 55580, 60344, 65170, 74480, 75430, 77812, 97265, 104272, 105602, 111160, 120688, 130340, 136171, 150860, 155624, 194530, 211204, 222320, 260680, 264005, 272342, 301720, 311248, 369607, 389060, 422408, 521360, 528010, 544684, 603440, 680855, 739214, 778120, 844816, 1056020, 1089368, 1361710, 1478428, 1556240, 1848035, 2112040, 2178736, 2587249, 2723420, 2956856, 3696070, 4224080, 5174498, 5446840, 5913712, 7392140, 10348996, 10893680, 12936245, 14784280, 20697992, 25872490, 29568560, 41395984, 51744980, 103489960, 206979920]

約数ペア:

[(1, 206979920), (2, 103489960), (4, 51744980), (5, 41395984), (7, 29568560), (8, 25872490), (10, 20697992), (14, 14784280), (16, 12936245), (19, 10893680), (20, 10348996), (28, 7392140), (35, 5913712), (38, 5446840), (40, 5174498), (49, 4224080), (56, 3696070), (70, 2956856), (76, 2723420), (80, 2587249), (95, 2178736), (98, 2112040), (112, 1848035), (133, 1556240), (140, 1478428), (152, 1361710), (190, 1089368), (196, 1056020), (245, 844816), (266, 778120), (280, 739214), (304, 680855), (343, 603440), (380, 544684), (392, 528010), (397, 521360), (490, 422408), (532, 389060), (560, 369607), (665, 311248), (686, 301720), (760, 272342), (784, 264005), (794, 260680), (931, 222320), (980, 211204), (1064, 194530), (1330, 155624), (1372, 150860), (1520, 136171), (1588, 130340), (1715, 120688), (1862, 111160), (1960, 105602), (1985, 104272), (2128, 97265), (2660, 77812), (2744, 75430), (2779, 74480), (3176, 65170), (3430, 60344), (3724, 55580), (3920, 52801), (3970, 52136), (4655, 44464), (5320, 38906), (5488, 37715), (5558, 37240), (6352, 32585), (6517, 31760), (6860, 30172), (7448, 27790), (7543, 27440), (7940, 26068), (9310, 22232), (10640, 19453), (11116, 18620), (13034, 15880), (13720, 15086), (13895, 14896)]