20121664120

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{3613}}^1$

素因数の和:3785

約数の個数: 128

約数和(自身を含む): 48055213440

約数和(自身を除く): 27933549320

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 53, 71, 74, 106, 142, 148, 185, 212, 265, 284, 296, 355, 370, 424, 530, 568, 710, 740, 1060, 1420, 1480, 1961, 2120, 2627, 2840, 3613, 3763, 3922, 5254, 7226, 7526, 7844, 9805, 10508, 13135, 14452, 15052, 15688, 18065, 18815, 19610, 21016, 26270, 28904, 30104, 36130, 37630, 39220, 52540, 72260, 75260, 78440, 105080, 133681, 139231, 144520, 150520, 191489, 256523, 267362, 278462, 382978, 513046, 534724, 556924, 668405, 696155, 765956, 957445, 1026092, 1069448, 1113848, 1282615, 1336810, 1392310, 1531912, 1914890, 2052184, 2565230, 2673620, 2784620, 3829780, 5130460, 5347240, 5569240, 7085093, 7659560, 9491351, 10260920, 13595719, 14170186, 18982702, 27191438, 28340372, 35425465, 37965404, 47456755, 54382876, 56680744, 67978595, 70850930, 75930808, 94913510, 108765752, 135957190, 141701860, 189827020, 271914380, 283403720, 379654040, 503041603, 543828760, 1006083206, 2012166412, 2515208015, 4024332824, 5030416030, 10060832060, 20121664120]

約数ペア:

[(1, 20121664120), (2, 10060832060), (4, 5030416030), (5, 4024332824), (8, 2515208015), (10, 2012166412), (20, 1006083206), (37, 543828760), (40, 503041603), (53, 379654040), (71, 283403720), (74, 271914380), (106, 189827020), (142, 141701860), (148, 135957190), (185, 108765752), (212, 94913510), (265, 75930808), (284, 70850930), (296, 67978595), (355, 56680744), (370, 54382876), (424, 47456755), (530, 37965404), (568, 35425465), (710, 28340372), (740, 27191438), (1060, 18982702), (1420, 14170186), (1480, 13595719), (1961, 10260920), (2120, 9491351), (2627, 7659560), (2840, 7085093), (3613, 5569240), (3763, 5347240), (3922, 5130460), (5254, 3829780), (7226, 2784620), (7526, 2673620), (7844, 2565230), (9805, 2052184), (10508, 1914890), (13135, 1531912), (14452, 1392310), (15052, 1336810), (15688, 1282615), (18065, 1113848), (18815, 1069448), (19610, 1026092), (21016, 957445), (26270, 765956), (28904, 696155), (30104, 668405), (36130, 556924), (37630, 534724), (39220, 513046), (52540, 382978), (72260, 278462), (75260, 267362), (78440, 256523), (105080, 191489), (133681, 150520), (139231, 144520)]