19661378

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{227}}^1$

素因数の和:398

約数の個数: 32

約数和(自身を含む): 33619968

約数和(自身を除く): 13958590

約数列:

[1, 2, 11, 22, 31, 62, 127, 227, 254, 341, 454, 682, 1397, 2497, 2794, 3937, 4994, 7037, 7874, 14074, 28829, 43307, 57658, 77407, 86614, 154814, 317119, 634238, 893699, 1787398, 9830689, 19661378]

約数ペア:

[(1, 19661378), (2, 9830689), (11, 1787398), (22, 893699), (31, 634238), (62, 317119), (127, 154814), (227, 86614), (254, 77407), (341, 57658), (454, 43307), (682, 28829), (1397, 14074), (2497, 7874), (2794, 7037), (3937, 4994)]