20939985

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{239}}^1$

素因数の和:323

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 20532015

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 59, 99, 135, 165, 177, 239, 295, 297, 495, 531, 649, 717, 885, 1195, 1485, 1593, 1947, 2151, 2629, 2655, 3245, 3585, 5841, 6453, 7887, 7965, 9735, 10755, 13145, 14101, 17523, 23661, 29205, 32265, 39435, 42303, 70505, 70983, 87615, 118305, 126909, 155111, 211515, 354915, 380727, 465333, 634545, 775555, 1395999, 1903635, 2326665, 4187997, 6979995, 20939985]

約数ペア:

[(1, 20939985), (3, 6979995), (5, 4187997), (9, 2326665), (11, 1903635), (15, 1395999), (27, 775555), (33, 634545), (45, 465333), (55, 380727), (59, 354915), (99, 211515), (135, 155111), (165, 126909), (177, 118305), (239, 87615), (295, 70983), (297, 70505), (495, 42303), (531, 39435), (649, 32265), (717, 29205), (885, 23661), (1195, 17523), (1485, 14101), (1593, 13145), (1947, 10755), (2151, 9735), (2629, 7965), (2655, 7887), (3245, 6453), (3585, 5841)]