20944520

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3767}}^1$

素因数の和:3917

約数の個数: 32

約数和(自身を含む): 47476800

約数和(自身を除く): 26532280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3767, 5560, 7534, 15068, 18835, 30136, 37670, 75340, 150680, 523613, 1047226, 2094452, 2618065, 4188904, 5236130, 10472260, 20944520]

約数ペア:

[(1, 20944520), (2, 10472260), (4, 5236130), (5, 4188904), (8, 2618065), (10, 2094452), (20, 1047226), (40, 523613), (139, 150680), (278, 75340), (556, 37670), (695, 30136), (1112, 18835), (1390, 15068), (2780, 7534), (3767, 5560)]