27990920

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{8431}}^1$

素因数の和:8525

約数の個数: 32

約数和(自身を含む): 63745920

約数和(自身を除く): 35755000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 8431, 16862, 33724, 42155, 67448, 84310, 168620, 337240, 699773, 1399546, 2799092, 3498865, 5598184, 6997730, 13995460, 27990920]

約数ペア:

[(1, 27990920), (2, 13995460), (4, 6997730), (5, 5598184), (8, 3498865), (10, 2799092), (20, 1399546), (40, 699773), (83, 337240), (166, 168620), (332, 84310), (415, 67448), (664, 42155), (830, 33724), (1660, 16862), (3320, 8431)]