20813978

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{5903}}^1$

素因数の和:5989

約数の個数: 16

約数和(自身を含む): 32731776

約数和(自身を除く): 11917798

約数列:

[1, 2, 41, 43, 82, 86, 1763, 3526, 5903, 11806, 242023, 253829, 484046, 507658, 10406989, 20813978]

約数ペア:

[(1, 20813978), (2, 10406989), (41, 507658), (43, 484046), (82, 253829), (86, 242023), (1763, 11806), (3526, 5903)]