20984535

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1087}}^1$

素因数の和:1125

約数の個数: 64

約数和(自身を含む): 43868160

約数和(自身を除く): 22883625

約数列:

[1, 3, 5, 9, 11, 13, 15, 27, 33, 39, 45, 55, 65, 99, 117, 135, 143, 165, 195, 297, 351, 429, 495, 585, 715, 1087, 1287, 1485, 1755, 2145, 3261, 3861, 5435, 6435, 9783, 11957, 14131, 16305, 19305, 29349, 35871, 42393, 48915, 59785, 70655, 107613, 127179, 146745, 155441, 179355, 211965, 322839, 381537, 466323, 538065, 635895, 777205, 1398969, 1614195, 1907685, 2331615, 4196907, 6994845, 20984535]

約数ペア:

[(1, 20984535), (3, 6994845), (5, 4196907), (9, 2331615), (11, 1907685), (13, 1614195), (15, 1398969), (27, 777205), (33, 635895), (39, 538065), (45, 466323), (55, 381537), (65, 322839), (99, 211965), (117, 179355), (135, 155441), (143, 146745), (165, 127179), (195, 107613), (297, 70655), (351, 59785), (429, 48915), (495, 42393), (585, 35871), (715, 29349), (1087, 19305), (1287, 16305), (1485, 14131), (1755, 11957), (2145, 9783), (3261, 6435), (3861, 5435)]