21460341

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1279}}^1$

素因数の和:1353

約数の個数: 32

約数和(自身を含む): 35389440

約数和(自身を除く): 13929099

約数列:

[1, 3, 7, 17, 21, 47, 51, 119, 141, 329, 357, 799, 987, 1279, 2397, 3837, 5593, 8953, 16779, 21743, 26859, 60113, 65229, 152201, 180339, 420791, 456603, 1021921, 1262373, 3065763, 7153447, 21460341]

約数ペア:

[(1, 21460341), (3, 7153447), (7, 3065763), (17, 1262373), (21, 1021921), (47, 456603), (51, 420791), (119, 180339), (141, 152201), (329, 65229), (357, 60113), (799, 26859), (987, 21743), (1279, 16779), (2397, 8953), (3837, 5593)]