157911520

素因数分解:

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

素因数の和:169

約数の個数: 144

約数和(自身を含む): 420396480

約数和(自身を除く): 262484960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 79, 80, 104, 124, 130, 155, 158, 160, 208, 248, 260, 310, 316, 395, 403, 416, 496, 520, 620, 632, 790, 806, 961, 992, 1027, 1040, 1240, 1264, 1580, 1612, 1922, 2015, 2054, 2080, 2449, 2480, 2528, 3160, 3224, 3844, 4030, 4108, 4805, 4898, 4960, 5135, 6320, 6448, 7688, 8060, 8216, 9610, 9796, 10270, 12245, 12493, 12640, 12896, 15376, 16120, 16432, 19220, 19592, 20540, 24490, 24986, 30752, 31837, 32240, 32864, 38440, 39184, 41080, 48980, 49972, 62465, 63674, 64480, 75919, 76880, 78368, 82160, 97960, 99944, 124930, 127348, 151838, 153760, 159185, 164320, 195920, 199888, 249860, 254696, 303676, 318370, 379595, 391840, 399776, 499720, 509392, 607352, 636740, 759190, 986947, 999440, 1018784, 1214704, 1273480, 1518380, 1973894, 1998880, 2429408, 2546960, 3036760, 3947788, 4934735, 5093920, 6073520, 7895576, 9869470, 12147040, 15791152, 19738940, 31582304, 39477880, 78955760, 157911520]

約数ペア:

[(1, 157911520), (2, 78955760), (4, 39477880), (5, 31582304), (8, 19738940), (10, 15791152), (13, 12147040), (16, 9869470), (20, 7895576), (26, 6073520), (31, 5093920), (32, 4934735), (40, 3947788), (52, 3036760), (62, 2546960), (65, 2429408), (79, 1998880), (80, 1973894), (104, 1518380), (124, 1273480), (130, 1214704), (155, 1018784), (158, 999440), (160, 986947), (208, 759190), (248, 636740), (260, 607352), (310, 509392), (316, 499720), (395, 399776), (403, 391840), (416, 379595), (496, 318370), (520, 303676), (620, 254696), (632, 249860), (790, 199888), (806, 195920), (961, 164320), (992, 159185), (1027, 153760), (1040, 151838), (1240, 127348), (1264, 124930), (1580, 99944), (1612, 97960), (1922, 82160), (2015, 78368), (2054, 76880), (2080, 75919), (2449, 64480), (2480, 63674), (2528, 62465), (3160, 49972), (3224, 48980), (3844, 41080), (4030, 39184), (4108, 38440), (4805, 32864), (4898, 32240), (4960, 31837), (5135, 30752), (6320, 24986), (6448, 24490), (7688, 20540), (8060, 19592), (8216, 19220), (9610, 16432), (9796, 16120), (10270, 15376), (12245, 12896), (12493, 12640)]