20130810

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{373}}^1$

素因数の和:647

約数の個数: 64

約数和(自身を含む): 55579392

約数和(自身を除く): 35448582

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 257, 373, 514, 746, 771, 1119, 1285, 1542, 1799, 1865, 2238, 2570, 2611, 3598, 3730, 3855, 5222, 5397, 5595, 7710, 7833, 8995, 10794, 11190, 13055, 15666, 17990, 26110, 26985, 39165, 53970, 78330, 95861, 191722, 287583, 479305, 575166, 671027, 958610, 1342054, 1437915, 2013081, 2875830, 3355135, 4026162, 6710270, 10065405, 20130810]

約数ペア:

[(1, 20130810), (2, 10065405), (3, 6710270), (5, 4026162), (6, 3355135), (7, 2875830), (10, 2013081), (14, 1437915), (15, 1342054), (21, 958610), (30, 671027), (35, 575166), (42, 479305), (70, 287583), (105, 191722), (210, 95861), (257, 78330), (373, 53970), (514, 39165), (746, 26985), (771, 26110), (1119, 17990), (1285, 15666), (1542, 13055), (1799, 11190), (1865, 10794), (2238, 8995), (2570, 7833), (2611, 7710), (3598, 5595), (3730, 5397), (3855, 5222)]