81677920

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^2\times {\mathrm{607}}^1$

素因数の和:680

約数の個数: 72

約数和(自身を含む): 200176704

約数和(自身を除く): 118498784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 607, 841, 928, 1160, 1214, 1682, 2320, 2428, 3035, 3364, 4205, 4640, 4856, 6070, 6728, 8410, 9712, 12140, 13456, 16820, 17603, 19424, 24280, 26912, 33640, 35206, 48560, 67280, 70412, 88015, 97120, 134560, 140824, 176030, 281648, 352060, 510487, 563296, 704120, 1020974, 1408240, 2041948, 2552435, 2816480, 4083896, 5104870, 8167792, 10209740, 16335584, 20419480, 40838960, 81677920]

約数ペア:

[(1, 81677920), (2, 40838960), (4, 20419480), (5, 16335584), (8, 10209740), (10, 8167792), (16, 5104870), (20, 4083896), (29, 2816480), (32, 2552435), (40, 2041948), (58, 1408240), (80, 1020974), (116, 704120), (145, 563296), (160, 510487), (232, 352060), (290, 281648), (464, 176030), (580, 140824), (607, 134560), (841, 97120), (928, 88015), (1160, 70412), (1214, 67280), (1682, 48560), (2320, 35206), (2428, 33640), (3035, 26912), (3364, 24280), (4205, 19424), (4640, 17603), (4856, 16820), (6070, 13456), (6728, 12140), (8410, 9712)]