21082159

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:243

約数の個数: 32

約数和(自身を含む): 27216000

約数和(自身を除く): 6133841

約数列:

[1, 7, 17, 29, 41, 119, 149, 203, 287, 493, 697, 1043, 1189, 2533, 3451, 4321, 4879, 6109, 8323, 17731, 20213, 30247, 42763, 73457, 103853, 141491, 177161, 514199, 726971, 1240127, 3011737, 21082159]

約数ペア:

[(1, 21082159), (7, 3011737), (17, 1240127), (29, 726971), (41, 514199), (119, 177161), (149, 141491), (203, 103853), (287, 73457), (493, 42763), (697, 30247), (1043, 20213), (1189, 17731), (2533, 8323), (3451, 6109), (4321, 4879)]