78955760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{79}}^1$

素因数の和:167

約数の個数: 120

約数和(自身を含む): 206861760

約数和(自身を除く): 127906000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 79, 80, 104, 124, 130, 155, 158, 208, 248, 260, 310, 316, 395, 403, 496, 520, 620, 632, 790, 806, 961, 1027, 1040, 1240, 1264, 1580, 1612, 1922, 2015, 2054, 2449, 2480, 3160, 3224, 3844, 4030, 4108, 4805, 4898, 5135, 6320, 6448, 7688, 8060, 8216, 9610, 9796, 10270, 12245, 12493, 15376, 16120, 16432, 19220, 19592, 20540, 24490, 24986, 31837, 32240, 38440, 39184, 41080, 48980, 49972, 62465, 63674, 75919, 76880, 82160, 97960, 99944, 124930, 127348, 151838, 159185, 195920, 199888, 249860, 254696, 303676, 318370, 379595, 499720, 509392, 607352, 636740, 759190, 986947, 999440, 1214704, 1273480, 1518380, 1973894, 2546960, 3036760, 3947788, 4934735, 6073520, 7895576, 9869470, 15791152, 19738940, 39477880, 78955760]

約数ペア:

[(1, 78955760), (2, 39477880), (4, 19738940), (5, 15791152), (8, 9869470), (10, 7895576), (13, 6073520), (16, 4934735), (20, 3947788), (26, 3036760), (31, 2546960), (40, 1973894), (52, 1518380), (62, 1273480), (65, 1214704), (79, 999440), (80, 986947), (104, 759190), (124, 636740), (130, 607352), (155, 509392), (158, 499720), (208, 379595), (248, 318370), (260, 303676), (310, 254696), (316, 249860), (395, 199888), (403, 195920), (496, 159185), (520, 151838), (620, 127348), (632, 124930), (790, 99944), (806, 97960), (961, 82160), (1027, 76880), (1040, 75919), (1240, 63674), (1264, 62465), (1580, 49972), (1612, 48980), (1922, 41080), (2015, 39184), (2054, 38440), (2449, 32240), (2480, 31837), (3160, 24986), (3224, 24490), (3844, 20540), (4030, 19592), (4108, 19220), (4805, 16432), (4898, 16120), (5135, 15376), (6320, 12493), (6448, 12245), (7688, 10270), (8060, 9796), (8216, 9610)]