81704220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{109}}^1$

素因数の和:196

約数の個数: 144

約数和(自身を含む): 256908960

約数和(自身を除く): 175204740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 31, 39, 52, 60, 62, 65, 78, 93, 109, 124, 130, 155, 156, 186, 195, 218, 260, 310, 327, 372, 390, 403, 436, 465, 545, 620, 654, 780, 806, 930, 961, 1090, 1209, 1308, 1417, 1612, 1635, 1860, 1922, 2015, 2180, 2418, 2834, 2883, 3270, 3379, 3844, 4030, 4251, 4805, 4836, 5668, 5766, 6045, 6540, 6758, 7085, 8060, 8502, 9610, 10137, 11532, 12090, 12493, 13516, 14170, 14415, 16895, 17004, 19220, 20274, 21255, 24180, 24986, 28340, 28830, 33790, 37479, 40548, 42510, 43927, 49972, 50685, 57660, 62465, 67580, 74958, 85020, 87854, 101370, 104749, 124930, 131781, 149916, 175708, 187395, 202740, 209498, 219635, 249860, 263562, 314247, 374790, 418996, 439270, 523745, 527124, 628494, 658905, 749580, 878540, 1047490, 1256988, 1317810, 1361737, 1571235, 2094980, 2635620, 2723474, 3142470, 4085211, 5446948, 6284940, 6808685, 8170422, 13617370, 16340844, 20426055, 27234740, 40852110, 81704220]

約数ペア:

[(1, 81704220), (2, 40852110), (3, 27234740), (4, 20426055), (5, 16340844), (6, 13617370), (10, 8170422), (12, 6808685), (13, 6284940), (15, 5446948), (20, 4085211), (26, 3142470), (30, 2723474), (31, 2635620), (39, 2094980), (52, 1571235), (60, 1361737), (62, 1317810), (65, 1256988), (78, 1047490), (93, 878540), (109, 749580), (124, 658905), (130, 628494), (155, 527124), (156, 523745), (186, 439270), (195, 418996), (218, 374790), (260, 314247), (310, 263562), (327, 249860), (372, 219635), (390, 209498), (403, 202740), (436, 187395), (465, 175708), (545, 149916), (620, 131781), (654, 124930), (780, 104749), (806, 101370), (930, 87854), (961, 85020), (1090, 74958), (1209, 67580), (1308, 62465), (1417, 57660), (1612, 50685), (1635, 49972), (1860, 43927), (1922, 42510), (2015, 40548), (2180, 37479), (2418, 33790), (2834, 28830), (2883, 28340), (3270, 24986), (3379, 24180), (3844, 21255), (4030, 20274), (4251, 19220), (4805, 17004), (4836, 16895), (5668, 14415), (5766, 14170), (6045, 13516), (6540, 12493), (6758, 12090), (7085, 11532), (8060, 10137), (8502, 9610)]