28821219

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{151}}^1$

素因数の和:371

約数の個数: 32

約数和(自身を含む): 45235200

約数和(自身を除く): 16413981

約数列:

[1, 3, 7, 21, 61, 149, 151, 183, 427, 447, 453, 1043, 1057, 1281, 3129, 3171, 9089, 9211, 22499, 27267, 27633, 63623, 64477, 67497, 157493, 190869, 193431, 472479, 1372439, 4117317, 9607073, 28821219]

約数ペア:

[(1, 28821219), (3, 9607073), (7, 4117317), (21, 1372439), (61, 472479), (149, 193431), (151, 190869), (183, 157493), (427, 67497), (447, 64477), (453, 63623), (1043, 27633), (1057, 27267), (1281, 22499), (3129, 9211), (3171, 9089)]