256910640

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4933}}^1$

素因数の和:4987

約数の個数: 160

約数和(自身を含む): 939749376

約数和(自身を除く): 682838736

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 35, 40, 42, 48, 56, 60, 62, 70, 80, 84, 93, 105, 112, 120, 124, 140, 155, 168, 186, 210, 217, 240, 248, 280, 310, 336, 372, 420, 434, 465, 496, 560, 620, 651, 744, 840, 868, 930, 1085, 1240, 1302, 1488, 1680, 1736, 1860, 2170, 2480, 2604, 3255, 3472, 3720, 4340, 4933, 5208, 6510, 7440, 8680, 9866, 10416, 13020, 14799, 17360, 19732, 24665, 26040, 29598, 34531, 39464, 49330, 52080, 59196, 69062, 73995, 78928, 98660, 103593, 118392, 138124, 147990, 152923, 172655, 197320, 207186, 236784, 276248, 295980, 305846, 345310, 394640, 414372, 458769, 517965, 552496, 591960, 611692, 690620, 764615, 828744, 917538, 1035930, 1070461, 1183920, 1223384, 1381240, 1529230, 1657488, 1835076, 2071860, 2140922, 2293845, 2446768, 2762480, 3058460, 3211383, 3670152, 4143720, 4281844, 4587690, 5352305, 6116920, 6422766, 7340304, 8287440, 8563688, 9175380, 10704610, 12233840, 12845532, 16056915, 17127376, 18350760, 21409220, 25691064, 32113830, 36701520, 42818440, 51382128, 64227660, 85636880, 128455320, 256910640]

約数ペア:

[(1, 256910640), (2, 128455320), (3, 85636880), (4, 64227660), (5, 51382128), (6, 42818440), (7, 36701520), (8, 32113830), (10, 25691064), (12, 21409220), (14, 18350760), (15, 17127376), (16, 16056915), (20, 12845532), (21, 12233840), (24, 10704610), (28, 9175380), (30, 8563688), (31, 8287440), (35, 7340304), (40, 6422766), (42, 6116920), (48, 5352305), (56, 4587690), (60, 4281844), (62, 4143720), (70, 3670152), (80, 3211383), (84, 3058460), (93, 2762480), (105, 2446768), (112, 2293845), (120, 2140922), (124, 2071860), (140, 1835076), (155, 1657488), (168, 1529230), (186, 1381240), (210, 1223384), (217, 1183920), (240, 1070461), (248, 1035930), (280, 917538), (310, 828744), (336, 764615), (372, 690620), (420, 611692), (434, 591960), (465, 552496), (496, 517965), (560, 458769), (620, 414372), (651, 394640), (744, 345310), (840, 305846), (868, 295980), (930, 276248), (1085, 236784), (1240, 207186), (1302, 197320), (1488, 172655), (1680, 152923), (1736, 147990), (1860, 138124), (2170, 118392), (2480, 103593), (2604, 98660), (3255, 78928), (3472, 73995), (3720, 69062), (4340, 59196), (4933, 52080), (5208, 49330), (6510, 39464), (7440, 34531), (8680, 29598), (9866, 26040), (10416, 24665), (13020, 19732), (14799, 17360)]