20001968

素因数分解:

$2^4\times 7^1\times {\mathrm{271}}^1\times {\mathrm{659}}^1$

素因数の和:945

約数の個数: 40

約数和(自身を含む): 44520960

約数和(自身を除く): 24518992

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 271, 542, 659, 1084, 1318, 1897, 2168, 2636, 3794, 4336, 4613, 5272, 7588, 9226, 10544, 15176, 18452, 30352, 36904, 73808, 178589, 357178, 714356, 1250123, 1428712, 2500246, 2857424, 5000492, 10000984, 20001968]

約数ペア:

[(1, 20001968), (2, 10000984), (4, 5000492), (7, 2857424), (8, 2500246), (14, 1428712), (16, 1250123), (28, 714356), (56, 357178), (112, 178589), (271, 73808), (542, 36904), (659, 30352), (1084, 18452), (1318, 15176), (1897, 10544), (2168, 9226), (2636, 7588), (3794, 5272), (4336, 4613)]