205641009

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1153}}^1$

素因数の和:1334

約数の個数: 48

約数和(自身を含む): 360048000

約数和(自身を除く): 154406991

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 149, 171, 399, 447, 1043, 1153, 1197, 1341, 2831, 3129, 3459, 8071, 8493, 9387, 10377, 19817, 21907, 24213, 25479, 59451, 65721, 72639, 153349, 171797, 178353, 197163, 460047, 515391, 1202579, 1380141, 1546173, 3264143, 3607737, 9792429, 10823211, 22849001, 29377287, 68547003, 205641009]

約数ペア:

[(1, 205641009), (3, 68547003), (7, 29377287), (9, 22849001), (19, 10823211), (21, 9792429), (57, 3607737), (63, 3264143), (133, 1546173), (149, 1380141), (171, 1202579), (399, 515391), (447, 460047), (1043, 197163), (1153, 178353), (1197, 171797), (1341, 153349), (2831, 72639), (3129, 65721), (3459, 59451), (8071, 25479), (8493, 24213), (9387, 21907), (10377, 19817)]