21403725

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{691}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 41187840

約数和(自身を除く): 19784115

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 59, 75, 105, 175, 177, 295, 413, 525, 691, 885, 1239, 1475, 2065, 2073, 3455, 4425, 4837, 6195, 10325, 10365, 14511, 17275, 24185, 30975, 40769, 51825, 72555, 120925, 122307, 203845, 285383, 362775, 611535, 856149, 1019225, 1426915, 3057675, 4280745, 7134575, 21403725]

約数ペア:

[(1, 21403725), (3, 7134575), (5, 4280745), (7, 3057675), (15, 1426915), (21, 1019225), (25, 856149), (35, 611535), (59, 362775), (75, 285383), (105, 203845), (175, 122307), (177, 120925), (295, 72555), (413, 51825), (525, 40769), (691, 30975), (885, 24185), (1239, 17275), (1475, 14511), (2065, 10365), (2073, 10325), (3455, 6195), (4425, 4837)]