19976385

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 38384640

約数和(自身を除く): 18408255

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 67, 139, 143, 165, 195, 201, 335, 417, 429, 695, 715, 737, 871, 1005, 1529, 1807, 2085, 2145, 2211, 2613, 3685, 4355, 4587, 5421, 7645, 9035, 9313, 9581, 11055, 13065, 19877, 22935, 27105, 27939, 28743, 46565, 47905, 59631, 99385, 102443, 121069, 139695, 143715, 298155, 307329, 363207, 512215, 605345, 1331759, 1536645, 1816035, 3995277, 6658795, 19976385]

約数ペア:

[(1, 19976385), (3, 6658795), (5, 3995277), (11, 1816035), (13, 1536645), (15, 1331759), (33, 605345), (39, 512215), (55, 363207), (65, 307329), (67, 298155), (139, 143715), (143, 139695), (165, 121069), (195, 102443), (201, 99385), (335, 59631), (417, 47905), (429, 46565), (695, 28743), (715, 27939), (737, 27105), (871, 22935), (1005, 19877), (1529, 13065), (1807, 11055), (2085, 9581), (2145, 9313), (2211, 9035), (2613, 7645), (3685, 5421), (4355, 4587)]