64143440

素因数分解:

$2^4\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1213}}^1$

素因数の和:1887

約数の個数: 40

約数和(自身を含む): 149482248

約数和(自身を除く): 85338808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 661, 1213, 1322, 2426, 2644, 3305, 4852, 5288, 6065, 6610, 9704, 10576, 12130, 13220, 19408, 24260, 26440, 48520, 52880, 97040, 801793, 1603586, 3207172, 4008965, 6414344, 8017930, 12828688, 16035860, 32071720, 64143440]

約数ペア:

[(1, 64143440), (2, 32071720), (4, 16035860), (5, 12828688), (8, 8017930), (10, 6414344), (16, 4008965), (20, 3207172), (40, 1603586), (80, 801793), (661, 97040), (1213, 52880), (1322, 48520), (2426, 26440), (2644, 24260), (3305, 19408), (4852, 13220), (5288, 12130), (6065, 10576), (6610, 9704)]