21083840

素因数分解:

$2^6\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1607}}^1$

素因数の和:1665

約数の個数: 56

約数和(自身を含む): 51462432

約数和(自身を除く): 30378592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 160, 164, 205, 320, 328, 410, 656, 820, 1312, 1607, 1640, 2624, 3214, 3280, 6428, 6560, 8035, 12856, 13120, 16070, 25712, 32140, 51424, 64280, 65887, 102848, 128560, 131774, 257120, 263548, 329435, 514240, 527096, 658870, 1054192, 1317740, 2108384, 2635480, 4216768, 5270960, 10541920, 21083840]

約数ペア:

[(1, 21083840), (2, 10541920), (4, 5270960), (5, 4216768), (8, 2635480), (10, 2108384), (16, 1317740), (20, 1054192), (32, 658870), (40, 527096), (41, 514240), (64, 329435), (80, 263548), (82, 257120), (160, 131774), (164, 128560), (205, 102848), (320, 65887), (328, 64280), (410, 51424), (656, 32140), (820, 25712), (1312, 16070), (1607, 13120), (1640, 12856), (2624, 8035), (3214, 6560), (3280, 6428)]