820222720

素因数分解:

$2^8\times 5^1\times {\mathrm{59}}^1\times {\mathrm{10861}}^1$

素因数の和:10941

約数の個数: 72

約数和(自身を含む): 1998173520

約数和(自身を除く): 1177950800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 64, 80, 118, 128, 160, 236, 256, 295, 320, 472, 590, 640, 944, 1180, 1280, 1888, 2360, 3776, 4720, 7552, 9440, 10861, 15104, 18880, 21722, 37760, 43444, 54305, 75520, 86888, 108610, 173776, 217220, 347552, 434440, 640799, 695104, 868880, 1281598, 1390208, 1737760, 2563196, 2780416, 3203995, 3475520, 5126392, 6407990, 6951040, 10252784, 12815980, 13902080, 20505568, 25631960, 41011136, 51263920, 82022272, 102527840, 164044544, 205055680, 410111360, 820222720]

約数ペア:

[(1, 820222720), (2, 410111360), (4, 205055680), (5, 164044544), (8, 102527840), (10, 82022272), (16, 51263920), (20, 41011136), (32, 25631960), (40, 20505568), (59, 13902080), (64, 12815980), (80, 10252784), (118, 6951040), (128, 6407990), (160, 5126392), (236, 3475520), (256, 3203995), (295, 2780416), (320, 2563196), (472, 1737760), (590, 1390208), (640, 1281598), (944, 868880), (1180, 695104), (1280, 640799), (1888, 434440), (2360, 347552), (3776, 217220), (4720, 173776), (7552, 108610), (9440, 86888), (10861, 75520), (15104, 54305), (18880, 43444), (21722, 37760)]