257040840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9871}}^1$

素因数の和:9923

約数の個数: 128

約数和(自身を含む): 909803520

約数和(自身を除く): 652762680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 56, 60, 62, 70, 84, 93, 105, 120, 124, 140, 155, 168, 186, 210, 217, 248, 280, 310, 372, 420, 434, 465, 620, 651, 744, 840, 868, 930, 1085, 1240, 1302, 1736, 1860, 2170, 2604, 3255, 3720, 4340, 5208, 6510, 8680, 9871, 13020, 19742, 26040, 29613, 39484, 49355, 59226, 69097, 78968, 98710, 118452, 138194, 148065, 197420, 207291, 236904, 276388, 296130, 306001, 345485, 394840, 414582, 552776, 592260, 612002, 690970, 829164, 918003, 1036455, 1184520, 1224004, 1381940, 1530005, 1658328, 1836006, 2072910, 2142007, 2448008, 2763880, 3060010, 3672012, 4145820, 4284014, 4590015, 6120020, 6426021, 7344024, 8291640, 8568028, 9180030, 10710035, 12240040, 12852042, 17136056, 18360060, 21420070, 25704084, 32130105, 36720120, 42840140, 51408168, 64260210, 85680280, 128520420, 257040840]

約数ペア:

[(1, 257040840), (2, 128520420), (3, 85680280), (4, 64260210), (5, 51408168), (6, 42840140), (7, 36720120), (8, 32130105), (10, 25704084), (12, 21420070), (14, 18360060), (15, 17136056), (20, 12852042), (21, 12240040), (24, 10710035), (28, 9180030), (30, 8568028), (31, 8291640), (35, 7344024), (40, 6426021), (42, 6120020), (56, 4590015), (60, 4284014), (62, 4145820), (70, 3672012), (84, 3060010), (93, 2763880), (105, 2448008), (120, 2142007), (124, 2072910), (140, 1836006), (155, 1658328), (168, 1530005), (186, 1381940), (210, 1224004), (217, 1184520), (248, 1036455), (280, 918003), (310, 829164), (372, 690970), (420, 612002), (434, 592260), (465, 552776), (620, 414582), (651, 394840), (744, 345485), (840, 306001), (868, 296130), (930, 276388), (1085, 236904), (1240, 207291), (1302, 197420), (1736, 148065), (1860, 138194), (2170, 118452), (2604, 98710), (3255, 78968), (3720, 69097), (4340, 59226), (5208, 49355), (6510, 39484), (8680, 29613), (9871, 26040), (13020, 19742)]