90861880

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{25523}}^1$

素因数の和:25623

約数の個数: 32

約数和(自身を含む): 206744400

約数和(自身を除く): 115882520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 25523, 51046, 102092, 127615, 204184, 255230, 510460, 1020920, 2271547, 4543094, 9086188, 11357735, 18172376, 22715470, 45430940, 90861880]

約数ペア:

[(1, 90861880), (2, 45430940), (4, 22715470), (5, 18172376), (8, 11357735), (10, 9086188), (20, 4543094), (40, 2271547), (89, 1020920), (178, 510460), (356, 255230), (445, 204184), (712, 127615), (890, 102092), (1780, 51046), (3560, 25523)]