21114639

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1$

素因数の和:189

約数の個数: 72

約数和(自身を含む): 39836160

約数和(自身を除く): 18721521

約数列:

[1, 3, 7, 9, 13, 21, 29, 39, 49, 63, 87, 91, 117, 127, 147, 203, 261, 273, 377, 381, 441, 609, 637, 819, 889, 1131, 1143, 1421, 1651, 1827, 1911, 2639, 2667, 3393, 3683, 4263, 4953, 5733, 6223, 7917, 8001, 11049, 11557, 12789, 14859, 18473, 18669, 23751, 25781, 33147, 34671, 47879, 55419, 56007, 77343, 80899, 104013, 143637, 166257, 180467, 232029, 242697, 335153, 430911, 541401, 728091, 1005459, 1624203, 2346071, 3016377, 7038213, 21114639]

約数ペア:

[(1, 21114639), (3, 7038213), (7, 3016377), (9, 2346071), (13, 1624203), (21, 1005459), (29, 728091), (39, 541401), (49, 430911), (63, 335153), (87, 242697), (91, 232029), (117, 180467), (127, 166257), (147, 143637), (203, 104013), (261, 80899), (273, 77343), (377, 56007), (381, 55419), (441, 47879), (609, 34671), (637, 33147), (819, 25781), (889, 23751), (1131, 18669), (1143, 18473), (1421, 14859), (1651, 12789), (1827, 11557), (1911, 11049), (2639, 8001), (2667, 7917), (3393, 6223), (3683, 5733), (4263, 4953)]