28796840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{8089}}^1$

素因数の和:8189

約数の個数: 32

約数和(自身を含む): 65529000

約数和(自身を除く): 36732160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 8089, 16178, 32356, 40445, 64712, 80890, 161780, 323560, 719921, 1439842, 2879684, 3599605, 5759368, 7199210, 14398420, 28796840]

約数ペア:

[(1, 28796840), (2, 14398420), (4, 7199210), (5, 5759368), (8, 3599605), (10, 2879684), (20, 1439842), (40, 719921), (89, 323560), (178, 161780), (356, 80890), (445, 64712), (712, 40445), (890, 32356), (1780, 16178), (3560, 8089)]