21339175

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 31997952

約数和(自身を除く): 10658777

約数列:

[1, 5, 11, 13, 25, 47, 55, 65, 127, 143, 235, 275, 325, 517, 611, 635, 715, 1175, 1397, 1651, 2585, 3055, 3175, 3575, 5969, 6721, 6985, 8255, 12925, 15275, 18161, 29845, 33605, 34925, 41275, 65659, 77597, 90805, 149225, 168025, 328295, 387985, 454025, 853567, 1641475, 1939925, 4267835, 21339175]

約数ペア:

[(1, 21339175), (5, 4267835), (11, 1939925), (13, 1641475), (25, 853567), (47, 454025), (55, 387985), (65, 328295), (127, 168025), (143, 149225), (235, 90805), (275, 77597), (325, 65659), (517, 41275), (611, 34925), (635, 33605), (715, 29845), (1175, 18161), (1397, 15275), (1651, 12925), (2585, 8255), (3055, 6985), (3175, 6721), (3575, 5969)]