20949225

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{379}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 38449920

約数和(自身を除く): 17500695

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 67, 75, 165, 201, 275, 335, 379, 737, 825, 1005, 1137, 1675, 1895, 2211, 3685, 4169, 5025, 5685, 9475, 11055, 12507, 18425, 20845, 25393, 28425, 55275, 62535, 76179, 104225, 126965, 279323, 312675, 380895, 634825, 837969, 1396615, 1904475, 4189845, 6983075, 20949225]

約数ペア:

[(1, 20949225), (3, 6983075), (5, 4189845), (11, 1904475), (15, 1396615), (25, 837969), (33, 634825), (55, 380895), (67, 312675), (75, 279323), (165, 126965), (201, 104225), (275, 76179), (335, 62535), (379, 55275), (737, 28425), (825, 25393), (1005, 20845), (1137, 18425), (1675, 12507), (1895, 11055), (2211, 9475), (3685, 5685), (4169, 5025)]