21167992

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{491}}^1$

素因数の和:831

約数の個数: 32

約数和(自身を含む): 42243120

約数和(自身を除く): 21075128

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 317, 491, 634, 982, 1268, 1964, 2536, 3928, 5389, 8347, 10778, 16694, 21556, 33388, 43112, 66776, 155647, 311294, 622588, 1245176, 2645999, 5291998, 10583996, 21167992]

約数ペア:

[(1, 21167992), (2, 10583996), (4, 5291998), (8, 2645999), (17, 1245176), (34, 622588), (68, 311294), (136, 155647), (317, 66776), (491, 43112), (634, 33388), (982, 21556), (1268, 16694), (1964, 10778), (2536, 8347), (3928, 5389)]