19728918

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2693}}^1$

素因数の和:2749

約数の個数: 48

約数和(自身を含む): 47910096

約数和(自身を除く): 28181178

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 37, 66, 74, 99, 111, 198, 222, 333, 407, 666, 814, 1221, 2442, 2693, 3663, 5386, 7326, 8079, 16158, 24237, 29623, 48474, 59246, 88869, 99641, 177738, 199282, 266607, 298923, 533214, 597846, 896769, 1096051, 1793538, 2192102, 3288153, 6576306, 9864459, 19728918]

約数ペア:

[(1, 19728918), (2, 9864459), (3, 6576306), (6, 3288153), (9, 2192102), (11, 1793538), (18, 1096051), (22, 896769), (33, 597846), (37, 533214), (66, 298923), (74, 266607), (99, 199282), (111, 177738), (198, 99641), (222, 88869), (333, 59246), (407, 48474), (666, 29623), (814, 24237), (1221, 16158), (2442, 8079), (2693, 7326), (3663, 5386)]