129512440

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{503}}^1$

素因数の和:712

約数の個数: 64

約数和(自身を含む): 301008960

約数和(自身を除く): 171496520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 157, 164, 205, 314, 328, 410, 503, 628, 785, 820, 1006, 1256, 1570, 1640, 2012, 2515, 3140, 4024, 5030, 6280, 6437, 10060, 12874, 20120, 20623, 25748, 32185, 41246, 51496, 64370, 78971, 82492, 103115, 128740, 157942, 164984, 206230, 257480, 315884, 394855, 412460, 631768, 789710, 824920, 1579420, 3158840, 3237811, 6475622, 12951244, 16189055, 25902488, 32378110, 64756220, 129512440]

約数ペア:

[(1, 129512440), (2, 64756220), (4, 32378110), (5, 25902488), (8, 16189055), (10, 12951244), (20, 6475622), (40, 3237811), (41, 3158840), (82, 1579420), (157, 824920), (164, 789710), (205, 631768), (314, 412460), (328, 394855), (410, 315884), (503, 257480), (628, 206230), (785, 164984), (820, 157942), (1006, 128740), (1256, 103115), (1570, 82492), (1640, 78971), (2012, 64370), (2515, 51496), (3140, 41246), (4024, 32185), (5030, 25748), (6280, 20623), (6437, 20120), (10060, 12874)]