20356505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{311}}^1$

素因数の和:401

約数の個数: 32

約数和(自身を含む): 28304640

約数和(自身を除く): 7948135

約数列:

[1, 5, 13, 19, 53, 65, 95, 247, 265, 311, 689, 1007, 1235, 1555, 3445, 4043, 5035, 5909, 13091, 16483, 20215, 29545, 65455, 76817, 82415, 214279, 313177, 384085, 1071395, 1565885, 4071301, 20356505]

約数ペア:

[(1, 20356505), (5, 4071301), (13, 1565885), (19, 1071395), (53, 384085), (65, 313177), (95, 214279), (247, 82415), (265, 76817), (311, 65455), (689, 29545), (1007, 20215), (1235, 16483), (1555, 13091), (3445, 5909), (4043, 5035)]