21676840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{6089}}^1$

素因数の和:6189

約数の個数: 32

約数和(自身を含む): 49329000

約数和(自身を除く): 27652160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 6089, 12178, 24356, 30445, 48712, 60890, 121780, 243560, 541921, 1083842, 2167684, 2709605, 4335368, 5419210, 10838420, 21676840]

約数ペア:

[(1, 21676840), (2, 10838420), (4, 5419210), (5, 4335368), (8, 2709605), (10, 2167684), (20, 1083842), (40, 541921), (89, 243560), (178, 121780), (356, 60890), (445, 48712), (712, 30445), (890, 24356), (1780, 12178), (3560, 6089)]