1989680005

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1\times {\mathrm{617}}^1$

素因数の和:889

約数の個数: 32

約数和(自身を含む): 2478278880

約数和(自身を除く): 488598875

約数列:

[1, 5, 61, 97, 109, 305, 485, 545, 617, 3085, 5917, 6649, 10573, 29585, 33245, 37637, 52865, 59849, 67253, 188185, 299245, 336265, 644953, 3224765, 3650789, 4102433, 6523541, 18253945, 20512165, 32617705, 397936001, 1989680005]

約数ペア:

[(1, 1989680005), (5, 397936001), (61, 32617705), (97, 20512165), (109, 18253945), (305, 6523541), (485, 4102433), (545, 3650789), (617, 3224765), (3085, 644953), (5917, 336265), (6649, 299245), (10573, 188185), (29585, 67253), (33245, 59849), (37637, 52865)]