221037440

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{857}}^1$

素因数の和:920

約数の個数: 128

約数和(自身を含む): 588107520

約数和(自身を除く): 367070080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 260, 310, 320, 403, 416, 496, 520, 620, 640, 806, 832, 857, 992, 1040, 1240, 1612, 1664, 1714, 1984, 2015, 2080, 2480, 3224, 3428, 3968, 4030, 4160, 4285, 4960, 6448, 6856, 8060, 8320, 8570, 9920, 11141, 12896, 13712, 16120, 17140, 19840, 22282, 25792, 26567, 27424, 32240, 34280, 44564, 51584, 53134, 54848, 55705, 64480, 68560, 89128, 106268, 109696, 111410, 128960, 132835, 137120, 178256, 212536, 222820, 257920, 265670, 274240, 345371, 356512, 425072, 445640, 531340, 548480, 690742, 713024, 850144, 891280, 1062680, 1381484, 1426048, 1700288, 1726855, 1782560, 2125360, 2762968, 3400576, 3453710, 3565120, 4250720, 5525936, 6907420, 7130240, 8501440, 11051872, 13814840, 17002880, 22103744, 27629680, 44207488, 55259360, 110518720, 221037440]

約数ペア:

[(1, 221037440), (2, 110518720), (4, 55259360), (5, 44207488), (8, 27629680), (10, 22103744), (13, 17002880), (16, 13814840), (20, 11051872), (26, 8501440), (31, 7130240), (32, 6907420), (40, 5525936), (52, 4250720), (62, 3565120), (64, 3453710), (65, 3400576), (80, 2762968), (104, 2125360), (124, 1782560), (128, 1726855), (130, 1700288), (155, 1426048), (160, 1381484), (208, 1062680), (248, 891280), (260, 850144), (310, 713024), (320, 690742), (403, 548480), (416, 531340), (496, 445640), (520, 425072), (620, 356512), (640, 345371), (806, 274240), (832, 265670), (857, 257920), (992, 222820), (1040, 212536), (1240, 178256), (1612, 137120), (1664, 132835), (1714, 128960), (1984, 111410), (2015, 109696), (2080, 106268), (2480, 89128), (3224, 68560), (3428, 64480), (3968, 55705), (4030, 54848), (4160, 53134), (4285, 51584), (4960, 44564), (6448, 34280), (6856, 32240), (8060, 27424), (8320, 26567), (8570, 25792), (9920, 22282), (11141, 19840), (12896, 17140), (13712, 16120)]