19998056

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{5197}}^1$

素因数の和:5253

約数の個数: 32

約数和(自身を含む): 41480040

約数和(自身を除く): 21481984

約数列:

[1, 2, 4, 8, 13, 26, 37, 52, 74, 104, 148, 296, 481, 962, 1924, 3848, 5197, 10394, 20788, 41576, 67561, 135122, 192289, 270244, 384578, 540488, 769156, 1538312, 2499757, 4999514, 9999028, 19998056]

約数ペア:

[(1, 19998056), (2, 9999028), (4, 4999514), (8, 2499757), (13, 1538312), (26, 769156), (37, 540488), (52, 384578), (74, 270244), (104, 192289), (148, 135122), (296, 67561), (481, 41576), (962, 20788), (1924, 10394), (3848, 5197)]