19964988

素因数分解:

$2^2\times 3^3\times {\mathrm{401}}^1\times {\mathrm{461}}^1$

素因数の和:875

約数の個数: 48

約数和(自身を含む): 52002720

約数和(自身を除く): 32037732

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 401, 461, 802, 922, 1203, 1383, 1604, 1844, 2406, 2766, 3609, 4149, 4812, 5532, 7218, 8298, 10827, 12447, 14436, 16596, 21654, 24894, 43308, 49788, 184861, 369722, 554583, 739444, 1109166, 1663749, 2218332, 3327498, 4991247, 6654996, 9982494, 19964988]

約数ペア:

[(1, 19964988), (2, 9982494), (3, 6654996), (4, 4991247), (6, 3327498), (9, 2218332), (12, 1663749), (18, 1109166), (27, 739444), (36, 554583), (54, 369722), (108, 184861), (401, 49788), (461, 43308), (802, 24894), (922, 21654), (1203, 16596), (1383, 14436), (1604, 12447), (1844, 10827), (2406, 8298), (2766, 7218), (3609, 5532), (4149, 4812)]