21954107

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:291

約数の個数: 24

約数和(自身を含む): 26812800

約数和(自身を除く): 4858693

約数列:

[1, 7, 31, 49, 97, 149, 217, 679, 1043, 1519, 3007, 4619, 4753, 7301, 14453, 21049, 32333, 101171, 147343, 226331, 448043, 708197, 3136301, 21954107]

約数ペア:

[(1, 21954107), (7, 3136301), (31, 708197), (49, 448043), (97, 226331), (149, 147343), (217, 101171), (679, 32333), (1043, 21049), (1519, 14453), (3007, 7301), (4619, 4753)]