21757710

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1187}}^1$

素因数の和:1257

約数の個数: 64

約数和(自身を含む): 57480192

約数和(自身を除く): 35722482

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 47, 65, 78, 94, 130, 141, 195, 235, 282, 390, 470, 611, 705, 1187, 1222, 1410, 1833, 2374, 3055, 3561, 3666, 5935, 6110, 7122, 9165, 11870, 15431, 17805, 18330, 30862, 35610, 46293, 55789, 77155, 92586, 111578, 154310, 167367, 231465, 278945, 334734, 462930, 557890, 725257, 836835, 1450514, 1673670, 2175771, 3626285, 4351542, 7252570, 10878855, 21757710]

約数ペア:

[(1, 21757710), (2, 10878855), (3, 7252570), (5, 4351542), (6, 3626285), (10, 2175771), (13, 1673670), (15, 1450514), (26, 836835), (30, 725257), (39, 557890), (47, 462930), (65, 334734), (78, 278945), (94, 231465), (130, 167367), (141, 154310), (195, 111578), (235, 92586), (282, 77155), (390, 55789), (470, 46293), (611, 35610), (705, 30862), (1187, 18330), (1222, 17805), (1410, 15431), (1833, 11870), (2374, 9165), (3055, 7122), (3561, 6110), (3666, 5935)]