21000330

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:253

約数の個数: 128

約数和(自身を含む): 62576640

約数和(自身を除く): 41576310

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 31, 39, 45, 54, 62, 65, 78, 90, 93, 117, 130, 135, 155, 186, 193, 195, 234, 270, 279, 310, 351, 386, 390, 403, 465, 558, 579, 585, 702, 806, 837, 930, 965, 1158, 1170, 1209, 1395, 1674, 1737, 1755, 1930, 2015, 2418, 2509, 2790, 2895, 3474, 3510, 3627, 4030, 4185, 5018, 5211, 5790, 5983, 6045, 7254, 7527, 8370, 8685, 10422, 10881, 11966, 12090, 12545, 15054, 17370, 17949, 18135, 21762, 22581, 25090, 26055, 29915, 35898, 36270, 37635, 45162, 52110, 53847, 54405, 59830, 67743, 75270, 77779, 89745, 107694, 108810, 112905, 135486, 155558, 161541, 179490, 225810, 233337, 269235, 323082, 338715, 388895, 466674, 538470, 677430, 700011, 777790, 807705, 1166685, 1400022, 1615410, 2100033, 2333370, 3500055, 4200066, 7000110, 10500165, 21000330]

約数ペア:

[(1, 21000330), (2, 10500165), (3, 7000110), (5, 4200066), (6, 3500055), (9, 2333370), (10, 2100033), (13, 1615410), (15, 1400022), (18, 1166685), (26, 807705), (27, 777790), (30, 700011), (31, 677430), (39, 538470), (45, 466674), (54, 388895), (62, 338715), (65, 323082), (78, 269235), (90, 233337), (93, 225810), (117, 179490), (130, 161541), (135, 155558), (155, 135486), (186, 112905), (193, 108810), (195, 107694), (234, 89745), (270, 77779), (279, 75270), (310, 67743), (351, 59830), (386, 54405), (390, 53847), (403, 52110), (465, 45162), (558, 37635), (579, 36270), (585, 35898), (702, 29915), (806, 26055), (837, 25090), (930, 22581), (965, 21762), (1158, 18135), (1170, 17949), (1209, 17370), (1395, 15054), (1674, 12545), (1737, 12090), (1755, 11966), (1930, 10881), (2015, 10422), (2418, 8685), (2509, 8370), (2790, 7527), (2895, 7254), (3474, 6045), (3510, 5983), (3627, 5790), (4030, 5211), (4185, 5018)]