399076

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:171

約数の個数: 24

約数和(自身を含む): 756000

約数和(自身を除く): 356924

約数列:

[1, 2, 4, 19, 38, 59, 76, 89, 118, 178, 236, 356, 1121, 1691, 2242, 3382, 4484, 5251, 6764, 10502, 21004, 99769, 199538, 399076]

約数ペア:

[(1, 399076), (2, 199538), (4, 99769), (19, 21004), (38, 10502), (59, 6764), (76, 5251), (89, 4484), (118, 3382), (178, 2242), (236, 1691), (356, 1121)]