21489502705

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{613}}^1\times {\mathrm{6571}}^1$

素因数の和:7297

約数の個数: 32

約数和(自身を含む): 28472427648

約数和(自身を除く): 6982924943

約数列:

[1, 5, 11, 55, 97, 485, 613, 1067, 3065, 5335, 6571, 6743, 32855, 33715, 59461, 72281, 297305, 361405, 637387, 654071, 3186935, 3270355, 4028023, 7011257, 20140115, 35056285, 44308253, 221541265, 390718231, 1953591155, 4297900541, 21489502705]

約数ペア:

[(1, 21489502705), (5, 4297900541), (11, 1953591155), (55, 390718231), (97, 221541265), (485, 44308253), (613, 35056285), (1067, 20140115), (3065, 7011257), (5335, 4028023), (6571, 3270355), (6743, 3186935), (32855, 654071), (33715, 637387), (59461, 361405), (72281, 297305)]