21708115

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{313}}^1$

素因数の和:439

約数の個数: 32

約数和(自身を含む): 31018176

約数和(自身を除く): 9310061

約数列:

[1, 5, 11, 13, 55, 65, 97, 143, 313, 485, 715, 1067, 1261, 1565, 3443, 4069, 5335, 6305, 13871, 17215, 20345, 30361, 44759, 69355, 151805, 223795, 333971, 394693, 1669855, 1973465, 4341623, 21708115]

約数ペア:

[(1, 21708115), (5, 4341623), (11, 1973465), (13, 1669855), (55, 394693), (65, 333971), (97, 223795), (143, 151805), (313, 69355), (485, 44759), (715, 30361), (1067, 20345), (1261, 17215), (1565, 13871), (3443, 6305), (4069, 5335)]