642428

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:209

約数の個数: 24

約数和(自身を含む): 1209600

約数和(自身を除く): 567172

約数列:

[1, 2, 4, 19, 38, 76, 79, 107, 158, 214, 316, 428, 1501, 2033, 3002, 4066, 6004, 8132, 8453, 16906, 33812, 160607, 321214, 642428]

約数ペア:

[(1, 642428), (2, 321214), (4, 160607), (19, 33812), (38, 16906), (76, 8453), (79, 8132), (107, 6004), (158, 4066), (214, 3002), (316, 2033), (428, 1501)]