21983920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1061}}^1$

素因数の和:1118

約数の個数: 80

約数和(自身を含む): 60049728

約数和(自身を除く): 38065808

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 56, 70, 74, 80, 112, 140, 148, 185, 259, 280, 296, 370, 518, 560, 592, 740, 1036, 1061, 1295, 1480, 2072, 2122, 2590, 2960, 4144, 4244, 5180, 5305, 7427, 8488, 10360, 10610, 14854, 16976, 20720, 21220, 29708, 37135, 39257, 42440, 59416, 74270, 78514, 84880, 118832, 148540, 157028, 196285, 274799, 297080, 314056, 392570, 549598, 594160, 628112, 785140, 1099196, 1373995, 1570280, 2198392, 2747990, 3140560, 4396784, 5495980, 10991960, 21983920]

約数ペア:

[(1, 21983920), (2, 10991960), (4, 5495980), (5, 4396784), (7, 3140560), (8, 2747990), (10, 2198392), (14, 1570280), (16, 1373995), (20, 1099196), (28, 785140), (35, 628112), (37, 594160), (40, 549598), (56, 392570), (70, 314056), (74, 297080), (80, 274799), (112, 196285), (140, 157028), (148, 148540), (185, 118832), (259, 84880), (280, 78514), (296, 74270), (370, 59416), (518, 42440), (560, 39257), (592, 37135), (740, 29708), (1036, 21220), (1061, 20720), (1295, 16976), (1480, 14854), (2072, 10610), (2122, 10360), (2590, 8488), (2960, 7427), (4144, 5305), (4244, 5180)]