66817840

素因数分解:

$2^4\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1303}}^1$

素因数の和:1957

約数の個数: 40

約数和(自身を含む): 155713248

約数和(自身を除く): 88895408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641, 1282, 1303, 2564, 2606, 3205, 5128, 5212, 6410, 6515, 10256, 10424, 12820, 13030, 20848, 25640, 26060, 51280, 52120, 104240, 835223, 1670446, 3340892, 4176115, 6681784, 8352230, 13363568, 16704460, 33408920, 66817840]

約数ペア:

[(1, 66817840), (2, 33408920), (4, 16704460), (5, 13363568), (8, 8352230), (10, 6681784), (16, 4176115), (20, 3340892), (40, 1670446), (80, 835223), (641, 104240), (1282, 52120), (1303, 51280), (2564, 26060), (2606, 25640), (3205, 20848), (5128, 13030), (5212, 12820), (6410, 10424), (6515, 10256)]