21240247678

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{676829}}^1$

素因数の和:676932

約数の個数: 32

約数和(自身を含む): 36841210560

約数和(自身を除く): 15600962882

約数列:

[1, 2, 13, 17, 26, 34, 71, 142, 221, 442, 923, 1207, 1846, 2414, 15691, 31382, 676829, 1353658, 8798777, 11506093, 17597554, 23012186, 48054859, 96109718, 149579209, 299158418, 624713167, 816932603, 1249426334, 1633865206, 10620123839, 21240247678]

約数ペア:

[(1, 21240247678), (2, 10620123839), (13, 1633865206), (17, 1249426334), (26, 816932603), (34, 624713167), (71, 299158418), (142, 149579209), (221, 96109718), (442, 48054859), (923, 23012186), (1207, 17597554), (1846, 11506093), (2414, 8798777), (15691, 1353658), (31382, 676829)]