21228376

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{12007}}^1$

素因数の和:12043

約数の個数: 32

約数和(自身を含む): 45390240

約数和(自身を除く): 24161864

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 442, 884, 1768, 12007, 24014, 48028, 96056, 156091, 204119, 312182, 408238, 624364, 816476, 1248728, 1632952, 2653547, 5307094, 10614188, 21228376]

約数ペア:

[(1, 21228376), (2, 10614188), (4, 5307094), (8, 2653547), (13, 1632952), (17, 1248728), (26, 816476), (34, 624364), (52, 408238), (68, 312182), (104, 204119), (136, 156091), (221, 96056), (442, 48028), (884, 24014), (1768, 12007)]