21376375

素因数分解:

$5^3\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:196

約数の個数: 32

約数和(自身を含む): 28252224

約数和(自身を除く): 6875849

約数列:

[1, 5, 25, 41, 43, 97, 125, 205, 215, 485, 1025, 1075, 1763, 2425, 3977, 4171, 5125, 5375, 8815, 12125, 19885, 20855, 44075, 99425, 104275, 171011, 220375, 497125, 521375, 855055, 4275275, 21376375]

約数ペア:

[(1, 21376375), (5, 4275275), (25, 855055), (41, 521375), (43, 497125), (97, 220375), (125, 171011), (205, 104275), (215, 99425), (485, 44075), (1025, 20855), (1075, 19885), (1763, 12125), (2425, 8815), (3977, 5375), (4171, 5125)]