21759997

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:233

約数の個数: 24

約数和(自身を含む): 26822400

約数和(自身を除く): 5062403

約数列:

[1, 7, 19, 79, 109, 133, 361, 553, 763, 1501, 2071, 2527, 8611, 10507, 14497, 28519, 39349, 60277, 163609, 199633, 275443, 1145263, 3108571, 21759997]

約数ペア:

[(1, 21759997), (7, 3108571), (19, 1145263), (79, 275443), (109, 199633), (133, 163609), (361, 60277), (553, 39349), (763, 28519), (1501, 14497), (2071, 10507), (2527, 8611)]