20544980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{757}}^1$

素因数の和:848

約数の個数: 48

約数和(自身を含む): 45843840

約数和(自身を除く): 25298860

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 59, 92, 115, 118, 230, 236, 295, 460, 590, 757, 1180, 1357, 1514, 2714, 3028, 3785, 5428, 6785, 7570, 13570, 15140, 17411, 27140, 34822, 44663, 69644, 87055, 89326, 174110, 178652, 223315, 348220, 446630, 893260, 1027249, 2054498, 4108996, 5136245, 10272490, 20544980]

約数ペア:

[(1, 20544980), (2, 10272490), (4, 5136245), (5, 4108996), (10, 2054498), (20, 1027249), (23, 893260), (46, 446630), (59, 348220), (92, 223315), (115, 178652), (118, 174110), (230, 89326), (236, 87055), (295, 69644), (460, 44663), (590, 34822), (757, 27140), (1180, 17411), (1357, 15140), (1514, 13570), (2714, 7570), (3028, 6785), (3785, 5428)]