21638283

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 10295157

約数列:

[1, 3, 19, 41, 47, 57, 123, 141, 197, 591, 779, 893, 1927, 2337, 2679, 3743, 5781, 8077, 9259, 11229, 24231, 27777, 36613, 109839, 153463, 175921, 379619, 460389, 527763, 1138857, 7212761, 21638283]

約数ペア:

[(1, 21638283), (3, 7212761), (19, 1138857), (41, 527763), (47, 460389), (57, 379619), (123, 175921), (141, 153463), (197, 109839), (591, 36613), (779, 27777), (893, 24231), (1927, 11229), (2337, 9259), (2679, 8077), (3743, 5781)]