80515820

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{11}}^2\times {\mathrm{97}}^1$

素因数の和:149

約数の個数: 144

約数和(自身を含む): 218971200

約数和(自身を除く): 138455380

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 97, 98, 110, 121, 140, 154, 194, 196, 220, 242, 245, 308, 343, 385, 388, 484, 485, 490, 539, 605, 679, 686, 770, 847, 970, 980, 1067, 1078, 1210, 1358, 1372, 1540, 1694, 1715, 1940, 2134, 2156, 2420, 2695, 2716, 3388, 3395, 3430, 3773, 4235, 4268, 4753, 5335, 5390, 5929, 6790, 6860, 7469, 7546, 8470, 9506, 10670, 10780, 11737, 11858, 13580, 14938, 15092, 16940, 18865, 19012, 21340, 23474, 23716, 23765, 29645, 29876, 33271, 37345, 37730, 41503, 46948, 47530, 52283, 58685, 59290, 66542, 74690, 75460, 82159, 83006, 95060, 104566, 117370, 118580, 133084, 149380, 164318, 166012, 166355, 207515, 209132, 234740, 261415, 328636, 332710, 365981, 410795, 415030, 522830, 575113, 665420, 731962, 821590, 830060, 1045660, 1150226, 1463924, 1643180, 1829905, 2300452, 2875565, 3659810, 4025791, 5751130, 7319620, 8051582, 11502260, 16103164, 20128955, 40257910, 80515820]

約数ペア:

[(1, 80515820), (2, 40257910), (4, 20128955), (5, 16103164), (7, 11502260), (10, 8051582), (11, 7319620), (14, 5751130), (20, 4025791), (22, 3659810), (28, 2875565), (35, 2300452), (44, 1829905), (49, 1643180), (55, 1463924), (70, 1150226), (77, 1045660), (97, 830060), (98, 821590), (110, 731962), (121, 665420), (140, 575113), (154, 522830), (194, 415030), (196, 410795), (220, 365981), (242, 332710), (245, 328636), (308, 261415), (343, 234740), (385, 209132), (388, 207515), (484, 166355), (485, 166012), (490, 164318), (539, 149380), (605, 133084), (679, 118580), (686, 117370), (770, 104566), (847, 95060), (970, 83006), (980, 82159), (1067, 75460), (1078, 74690), (1210, 66542), (1358, 59290), (1372, 58685), (1540, 52283), (1694, 47530), (1715, 46948), (1940, 41503), (2134, 37730), (2156, 37345), (2420, 33271), (2695, 29876), (2716, 29645), (3388, 23765), (3395, 23716), (3430, 23474), (3773, 21340), (4235, 19012), (4268, 18865), (4753, 16940), (5335, 15092), (5390, 14938), (5929, 13580), (6790, 11858), (6860, 11737), (7469, 10780), (7546, 10670), (8470, 9506)]