21719888

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1931}}^1$

素因数の和:1995

約数の個数: 40

約数和(自身を含む): 45517920

約数和(自身を除く): 23798032

約数列:

[1, 2, 4, 8, 16, 19, 37, 38, 74, 76, 148, 152, 296, 304, 592, 703, 1406, 1931, 2812, 3862, 5624, 7724, 11248, 15448, 30896, 36689, 71447, 73378, 142894, 146756, 285788, 293512, 571576, 587024, 1143152, 1357493, 2714986, 5429972, 10859944, 21719888]

約数ペア:

[(1, 21719888), (2, 10859944), (4, 5429972), (8, 2714986), (16, 1357493), (19, 1143152), (37, 587024), (38, 571576), (74, 293512), (76, 285788), (148, 146756), (152, 142894), (296, 73378), (304, 71447), (592, 36689), (703, 30896), (1406, 15448), (1931, 11248), (2812, 7724), (3862, 5624)]