72401440

素因数分解:

$2^5\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2297}}^1$

素因数の和:2509

約数の個数: 48

約数和(自身を含む): 171991512

約数和(自身を除く): 99590072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 197, 394, 788, 985, 1576, 1970, 2297, 3152, 3940, 4594, 6304, 7880, 9188, 11485, 15760, 18376, 22970, 31520, 36752, 45940, 73504, 91880, 183760, 367520, 452509, 905018, 1810036, 2262545, 3620072, 4525090, 7240144, 9050180, 14480288, 18100360, 36200720, 72401440]

約数ペア:

[(1, 72401440), (2, 36200720), (4, 18100360), (5, 14480288), (8, 9050180), (10, 7240144), (16, 4525090), (20, 3620072), (32, 2262545), (40, 1810036), (80, 905018), (160, 452509), (197, 367520), (394, 183760), (788, 91880), (985, 73504), (1576, 45940), (1970, 36752), (2297, 31520), (3152, 22970), (3940, 18376), (4594, 15760), (6304, 11485), (7880, 9188)]