215517981

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{8419}}^1$

素因数の和:8505

約数の個数: 32

約数和(自身を含む): 349194240

約数和(自身を除く): 133676259

約数列:

[1, 3, 7, 21, 23, 53, 69, 159, 161, 371, 483, 1113, 1219, 3657, 8419, 8533, 25257, 25599, 58933, 176799, 193637, 446207, 580911, 1338621, 1355459, 3123449, 4066377, 9370347, 10262761, 30788283, 71839327, 215517981]

約数ペア:

[(1, 215517981), (3, 71839327), (7, 30788283), (21, 10262761), (23, 9370347), (53, 4066377), (69, 3123449), (159, 1355459), (161, 1338621), (371, 580911), (483, 446207), (1113, 193637), (1219, 176799), (3657, 58933), (8419, 25599), (8533, 25257)]