21271428

素因数分解:

$2^2\times 3^2\times {\mathrm{67}}^1\times {\mathrm{8819}}^1$

素因数の和:8896

約数の個数: 36

約数和(自身を含む): 54578160

約数和(自身を除く): 33306732

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 67, 134, 201, 268, 402, 603, 804, 1206, 2412, 8819, 17638, 26457, 35276, 52914, 79371, 105828, 158742, 317484, 590873, 1181746, 1772619, 2363492, 3545238, 5317857, 7090476, 10635714, 21271428]

約数ペア:

[(1, 21271428), (2, 10635714), (3, 7090476), (4, 5317857), (6, 3545238), (9, 2363492), (12, 1772619), (18, 1181746), (36, 590873), (67, 317484), (134, 158742), (201, 105828), (268, 79371), (402, 52914), (603, 35276), (804, 26457), (1206, 17638), (2412, 8819)]