28016560

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:147

約数の個数: 160

約数和(自身を含む): 79994880

約数和(自身を除く): 51978320

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 31, 40, 44, 52, 55, 62, 65, 79, 80, 88, 104, 110, 124, 130, 143, 155, 158, 176, 208, 220, 248, 260, 286, 310, 316, 341, 395, 403, 440, 496, 520, 572, 620, 632, 682, 715, 790, 806, 869, 880, 1027, 1040, 1144, 1240, 1264, 1364, 1430, 1580, 1612, 1705, 1738, 2015, 2054, 2288, 2449, 2480, 2728, 2860, 3160, 3224, 3410, 3476, 4030, 4108, 4345, 4433, 4898, 5135, 5456, 5720, 6320, 6448, 6820, 6952, 8060, 8216, 8690, 8866, 9796, 10270, 11297, 11440, 12245, 13640, 13904, 16120, 16432, 17380, 17732, 19592, 20540, 22165, 22594, 24490, 26939, 27280, 31837, 32240, 34760, 35464, 39184, 41080, 44330, 45188, 48980, 53878, 56485, 63674, 69520, 70928, 82160, 88660, 90376, 97960, 107756, 112970, 127348, 134695, 159185, 177320, 180752, 195920, 215512, 225940, 254696, 269390, 318370, 350207, 354640, 431024, 451880, 509392, 538780, 636740, 700414, 903760, 1077560, 1273480, 1400828, 1751035, 2155120, 2546960, 2801656, 3502070, 5603312, 7004140, 14008280, 28016560]

約数ペア:

[(1, 28016560), (2, 14008280), (4, 7004140), (5, 5603312), (8, 3502070), (10, 2801656), (11, 2546960), (13, 2155120), (16, 1751035), (20, 1400828), (22, 1273480), (26, 1077560), (31, 903760), (40, 700414), (44, 636740), (52, 538780), (55, 509392), (62, 451880), (65, 431024), (79, 354640), (80, 350207), (88, 318370), (104, 269390), (110, 254696), (124, 225940), (130, 215512), (143, 195920), (155, 180752), (158, 177320), (176, 159185), (208, 134695), (220, 127348), (248, 112970), (260, 107756), (286, 97960), (310, 90376), (316, 88660), (341, 82160), (395, 70928), (403, 69520), (440, 63674), (496, 56485), (520, 53878), (572, 48980), (620, 45188), (632, 44330), (682, 41080), (715, 39184), (790, 35464), (806, 34760), (869, 32240), (880, 31837), (1027, 27280), (1040, 26939), (1144, 24490), (1240, 22594), (1264, 22165), (1364, 20540), (1430, 19592), (1580, 17732), (1612, 17380), (1705, 16432), (1738, 16120), (2015, 13904), (2054, 13640), (2288, 12245), (2449, 11440), (2480, 11297), (2728, 10270), (2860, 9796), (3160, 8866), (3224, 8690), (3410, 8216), (3476, 8060), (4030, 6952), (4108, 6820), (4345, 6448), (4433, 6320), (4898, 5720), (5135, 5456)]