28065219

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{461}}^1$

素因数の和:707

約数の個数: 32

約数和(自身を含む): 46362624

約数和(自身を除く): 18297405

約数列:

[1, 3, 7, 13, 21, 39, 91, 223, 273, 461, 669, 1383, 1561, 2899, 3227, 4683, 5993, 8697, 9681, 17979, 20293, 41951, 60879, 102803, 125853, 308409, 719621, 1336439, 2158863, 4009317, 9355073, 28065219]

約数ペア:

[(1, 28065219), (3, 9355073), (7, 4009317), (13, 2158863), (21, 1336439), (39, 719621), (91, 308409), (223, 125853), (273, 102803), (461, 60879), (669, 41951), (1383, 20293), (1561, 17979), (2899, 9681), (3227, 8697), (4683, 5993)]