18710896

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1009}}^1$

素因数の和:1097

約数の個数: 40

約数和(自身を含む): 38824400

約数和(自身を除く): 20113504

約数列:

[1, 2, 4, 8, 16, 19, 38, 61, 76, 122, 152, 244, 304, 488, 976, 1009, 1159, 2018, 2318, 4036, 4636, 8072, 9272, 16144, 18544, 19171, 38342, 61549, 76684, 123098, 153368, 246196, 306736, 492392, 984784, 1169431, 2338862, 4677724, 9355448, 18710896]

約数ペア:

[(1, 18710896), (2, 9355448), (4, 4677724), (8, 2338862), (16, 1169431), (19, 984784), (38, 492392), (61, 306736), (76, 246196), (122, 153368), (152, 123098), (244, 76684), (304, 61549), (488, 38342), (976, 19171), (1009, 18544), (1159, 16144), (2018, 9272), (2318, 8072), (4036, 4636)]