20081009284

素因数分解:

$2^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{521}}^1\times {\mathrm{6781}}^1$

素因数の和:7349

約数の個数: 72

約数和(自身を含む): 42376241880

約数和(自身を除く): 22295232596

約数列:

[1, 2, 4, 7, 14, 28, 29, 49, 58, 98, 116, 196, 203, 406, 521, 812, 1042, 1421, 2084, 2842, 3647, 5684, 6781, 7294, 13562, 14588, 15109, 25529, 27124, 30218, 47467, 51058, 60436, 94934, 102116, 105763, 189868, 196649, 211526, 332269, 393298, 423052, 664538, 740341, 786596, 1329076, 1376543, 1480682, 2753086, 2961364, 3532901, 5506172, 7065802, 9635801, 14131604, 19271602, 24730307, 38543204, 49460614, 98921228, 102454129, 173112149, 204908258, 346224298, 409816516, 692448596, 717178903, 1434357806, 2868715612, 5020252321, 10040504642, 20081009284]

約数ペア:

[(1, 20081009284), (2, 10040504642), (4, 5020252321), (7, 2868715612), (14, 1434357806), (28, 717178903), (29, 692448596), (49, 409816516), (58, 346224298), (98, 204908258), (116, 173112149), (196, 102454129), (203, 98921228), (406, 49460614), (521, 38543204), (812, 24730307), (1042, 19271602), (1421, 14131604), (2084, 9635801), (2842, 7065802), (3647, 5506172), (5684, 3532901), (6781, 2961364), (7294, 2753086), (13562, 1480682), (14588, 1376543), (15109, 1329076), (25529, 786596), (27124, 740341), (30218, 664538), (47467, 423052), (51058, 393298), (60436, 332269), (94934, 211526), (102116, 196649), (105763, 189868)]