20100529040

素因数分解:

$2^4\times 5^1\times {\mathrm{1609}}^1\times {\mathrm{156157}}^1$

素因数の和:157779

約数の個数: 40

約数和(自身を含む): 46763074680

約数和(自身を除く): 26662545640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1609, 3218, 6436, 8045, 12872, 16090, 25744, 32180, 64360, 128720, 156157, 312314, 624628, 780785, 1249256, 1561570, 2498512, 3123140, 6246280, 12492560, 251256613, 502513226, 1005026452, 1256283065, 2010052904, 2512566130, 4020105808, 5025132260, 10050264520, 20100529040]

約数ペア:

[(1, 20100529040), (2, 10050264520), (4, 5025132260), (5, 4020105808), (8, 2512566130), (10, 2010052904), (16, 1256283065), (20, 1005026452), (40, 502513226), (80, 251256613), (1609, 12492560), (3218, 6246280), (6436, 3123140), (8045, 2498512), (12872, 1561570), (16090, 1249256), (25744, 780785), (32180, 624628), (64360, 312314), (128720, 156157)]