21663117

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{179}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 38413440

約数和(自身を除く): 16750323

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 113, 119, 153, 179, 339, 357, 537, 791, 1017, 1071, 1253, 1611, 1921, 2373, 3043, 3759, 5763, 7119, 9129, 11277, 13447, 17289, 20227, 21301, 27387, 40341, 60681, 63903, 121023, 141589, 182043, 191709, 343859, 424767, 1031577, 1274301, 2407013, 3094731, 7221039, 21663117]

約数ペア:

[(1, 21663117), (3, 7221039), (7, 3094731), (9, 2407013), (17, 1274301), (21, 1031577), (51, 424767), (63, 343859), (113, 191709), (119, 182043), (153, 141589), (179, 121023), (339, 63903), (357, 60681), (537, 40341), (791, 27387), (1017, 21301), (1071, 20227), (1253, 17289), (1611, 13447), (1921, 11277), (2373, 9129), (3043, 7119), (3759, 5763)]