21490330

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{5953}}^1$

素因数の和:5998

約数の個数: 24

約数和(自身を含む): 40832532

約数和(自身を除く): 19342202

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 361, 722, 1805, 3610, 5953, 11906, 29765, 59530, 113107, 226214, 565535, 1131070, 2149033, 4298066, 10745165, 21490330]

約数ペア:

[(1, 21490330), (2, 10745165), (5, 4298066), (10, 2149033), (19, 1131070), (38, 565535), (95, 226214), (190, 113107), (361, 59530), (722, 29765), (1805, 11906), (3610, 5953)]