81493860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{523}}^1$

素因数の和:602

約数の個数: 144

約数和(自身を含む): 270962496

約数和(自身を除く): 189468636

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 53, 60, 70, 84, 98, 105, 106, 140, 147, 159, 196, 210, 212, 245, 265, 294, 318, 371, 420, 490, 523, 530, 588, 636, 735, 742, 795, 980, 1046, 1060, 1113, 1470, 1484, 1569, 1590, 1855, 2092, 2226, 2597, 2615, 2940, 3138, 3180, 3661, 3710, 4452, 5194, 5230, 5565, 6276, 7322, 7420, 7791, 7845, 10388, 10460, 10983, 11130, 12985, 14644, 15582, 15690, 18305, 21966, 22260, 25627, 25970, 27719, 31164, 31380, 36610, 38955, 43932, 51254, 51940, 54915, 55438, 73220, 76881, 77910, 83157, 102508, 109830, 110876, 128135, 138595, 153762, 155820, 166314, 194033, 219660, 256270, 277190, 307524, 332628, 384405, 388066, 415785, 512540, 554380, 582099, 768810, 776132, 831570, 970165, 1164198, 1358231, 1537620, 1663140, 1940330, 2328396, 2716462, 2910495, 3880660, 4074693, 5432924, 5820990, 6791155, 8149386, 11641980, 13582310, 16298772, 20373465, 27164620, 40746930, 81493860]

約数ペア:

[(1, 81493860), (2, 40746930), (3, 27164620), (4, 20373465), (5, 16298772), (6, 13582310), (7, 11641980), (10, 8149386), (12, 6791155), (14, 5820990), (15, 5432924), (20, 4074693), (21, 3880660), (28, 2910495), (30, 2716462), (35, 2328396), (42, 1940330), (49, 1663140), (53, 1537620), (60, 1358231), (70, 1164198), (84, 970165), (98, 831570), (105, 776132), (106, 768810), (140, 582099), (147, 554380), (159, 512540), (196, 415785), (210, 388066), (212, 384405), (245, 332628), (265, 307524), (294, 277190), (318, 256270), (371, 219660), (420, 194033), (490, 166314), (523, 155820), (530, 153762), (588, 138595), (636, 128135), (735, 110876), (742, 109830), (795, 102508), (980, 83157), (1046, 77910), (1060, 76881), (1113, 73220), (1470, 55438), (1484, 54915), (1569, 51940), (1590, 51254), (1855, 43932), (2092, 38955), (2226, 36610), (2597, 31380), (2615, 31164), (2940, 27719), (3138, 25970), (3180, 25627), (3661, 22260), (3710, 21966), (4452, 18305), (5194, 15690), (5230, 15582), (5565, 14644), (6276, 12985), (7322, 11130), (7420, 10983), (7791, 10460), (7845, 10388)]