21458157

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{151}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 33736704

約数和(自身を除く): 12278547

約数列:

[1, 3, 7, 21, 67, 101, 151, 201, 303, 453, 469, 707, 1057, 1407, 2121, 3171, 6767, 10117, 15251, 20301, 30351, 45753, 47369, 70819, 106757, 142107, 212457, 320271, 1021817, 3065451, 7152719, 21458157]

約数ペア:

[(1, 21458157), (3, 7152719), (7, 3065451), (21, 1021817), (67, 320271), (101, 212457), (151, 142107), (201, 106757), (303, 70819), (453, 47369), (469, 45753), (707, 30351), (1057, 20301), (1407, 15251), (2121, 10117), (3171, 6767)]