20787029137

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1\times {\mathrm{563}}^1\times {\mathrm{743}}^1$

素因数の和:1573

約数の個数: 32

約数和(自身を含む): 24706990080

約数和(自身を除く): 3919960943

約数列:

[1, 7, 31, 217, 229, 563, 743, 1603, 3941, 5201, 7099, 17453, 23033, 49693, 122171, 128927, 161231, 170147, 418309, 902489, 1191029, 2928163, 3996737, 5274557, 12967579, 27977159, 36921899, 90773053, 95792761, 670549327, 2969575591, 20787029137]

約数ペア:

[(1, 20787029137), (7, 2969575591), (31, 670549327), (217, 95792761), (229, 90773053), (563, 36921899), (743, 27977159), (1603, 12967579), (3941, 5274557), (5201, 3996737), (7099, 2928163), (17453, 1191029), (23033, 902489), (49693, 418309), (122171, 170147), (128927, 161231)]