20784520

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{8807}}^1$

素因数の和:8877

約数の個数: 32

約数和(自身を含む): 47563200

約数和(自身を除く): 26778680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 472, 590, 1180, 2360, 8807, 17614, 35228, 44035, 70456, 88070, 176140, 352280, 519613, 1039226, 2078452, 2598065, 4156904, 5196130, 10392260, 20784520]

約数ペア:

[(1, 20784520), (2, 10392260), (4, 5196130), (5, 4156904), (8, 2598065), (10, 2078452), (20, 1039226), (40, 519613), (59, 352280), (118, 176140), (236, 88070), (295, 70456), (472, 44035), (590, 35228), (1180, 17614), (2360, 8807)]