21179895

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{5581}}^1$

素因数の和:5623

約数の個数: 32

約数和(自身を含む): 38582784

約数和(自身を除く): 17402889

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 69, 115, 165, 253, 345, 759, 1265, 3795, 5581, 16743, 27905, 61391, 83715, 128363, 184173, 306955, 385089, 641815, 920865, 1411993, 1925445, 4235979, 7059965, 21179895]

約数ペア:

[(1, 21179895), (3, 7059965), (5, 4235979), (11, 1925445), (15, 1411993), (23, 920865), (33, 641815), (55, 385089), (69, 306955), (115, 184173), (165, 128363), (253, 83715), (345, 61391), (759, 27905), (1265, 16743), (3795, 5581)]