81837280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{821}}^1$

素因数の和:932

約数の個数: 96

約数和(自身を含む): 223715520

約数和(自身を除く): 141878240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 89, 112, 140, 160, 178, 224, 280, 356, 445, 560, 623, 712, 821, 890, 1120, 1246, 1424, 1642, 1780, 2492, 2848, 3115, 3284, 3560, 4105, 4984, 5747, 6230, 6568, 7120, 8210, 9968, 11494, 12460, 13136, 14240, 16420, 19936, 22988, 24920, 26272, 28735, 32840, 45976, 49840, 57470, 65680, 73069, 91952, 99680, 114940, 131360, 146138, 183904, 229880, 292276, 365345, 459760, 511483, 584552, 730690, 919520, 1022966, 1169104, 1461380, 2045932, 2338208, 2557415, 2922760, 4091864, 5114830, 5845520, 8183728, 10229660, 11691040, 16367456, 20459320, 40918640, 81837280]

約数ペア:

[(1, 81837280), (2, 40918640), (4, 20459320), (5, 16367456), (7, 11691040), (8, 10229660), (10, 8183728), (14, 5845520), (16, 5114830), (20, 4091864), (28, 2922760), (32, 2557415), (35, 2338208), (40, 2045932), (56, 1461380), (70, 1169104), (80, 1022966), (89, 919520), (112, 730690), (140, 584552), (160, 511483), (178, 459760), (224, 365345), (280, 292276), (356, 229880), (445, 183904), (560, 146138), (623, 131360), (712, 114940), (821, 99680), (890, 91952), (1120, 73069), (1246, 65680), (1424, 57470), (1642, 49840), (1780, 45976), (2492, 32840), (2848, 28735), (3115, 26272), (3284, 24920), (3560, 22988), (4105, 19936), (4984, 16420), (5747, 14240), (6230, 13136), (6568, 12460), (7120, 11494), (8210, 9968)]